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Asco 300 Series transfer Switches

Asco 300 series transfer switches for commercial light industrial applications.

Designed to Fit Anywhere

The ASCO SerieS 300 product line represents the most compact design of automatic power transfer switches in the industry. With space in electrical closets being at a premium, the use of wall or floor-mounted ASCO Power Transfer Switches assures designers optimum utilization of space.All transfer switches through 2000 amps are designed to be completely front accessible. This permits the enclosures to be installed flush to the wall and still allows installation of all power cabling and connections from the front of the switch. Cable entrance plates are also standard on the 1600 and 2000 amp units to install optional side-mounted pull boxes for additional cable bending space.

ASCO Series 300 Automatic & Manual Transfer Switches.

***Click on any transfer switch to add it to cart.

Amps	Open Style Enclosure			Type 1 Enclosure
Amps	2 Pole	3 Pole	4 Pole	2 Pole	3 Pole	4 Pole
30	$1,318	$1,530	$2,163	$1,374	$1,587	$2,219
70	$1,359	$1,566	$2,204	$1,415	$1,622	$2,262
104	$1,394	$1,591	$2,267	$1,450	$1,648	$2,324
150	$1,595	$1,737	$2,445	$1,651	$1,794	$2,503
200	$1,819	$2,155	$2,826	$1,875	$2,211	$2,883
230	$2,130	$2,305	$3,146	$2,187	$2,362	$3,202
260	$2,238	$2,550	$3,192	$2,296	$2,607	$3,248
400	$2,731	$3,132	$4,218	$2,788	$3,188	$4,275
600	$5,148	$5,369	$7,162	$5,263	$5,484	$7,277
800	$5,329	$5,704	$7,812	$5,445	$5,820	$7,929
1000	$8,303	$8,614	$10,290	$8,419	$8,731	$10,407
1200	$9,890	$10,356	$11,684	$10,007	$10,473	$11,801
1600	N/A	$12,406	$14,960	N/A	$12,699	$15,252
2000	N/A	$14,131	$17,273	N/A	$14,423	$17,529
2600	N/A	$19,860	$25,311	N/A	$20,151	$25,604
3000	N/A	$21,792	$28,002	N/A	$22,084	$28,295

*We can add Secure/Non-Secure Enclosure Options (UL Type 3R, UL Type 4, UL Type 12, UL Type 4X (304 Grade)) Please call 800-341-7027 for pricing or further discounts.

ASCO Factory Mounted Control Options for Series 300 Automatic Transfer Switches.

Acc. #	Description	Price
5	Test Switch	STD
6B	Manual bypass of transfer to normal TD	STD
9A/9B	ATS switch position indicating lights	STD
9C/9D	Source available lights	STD
11C	Auto. engine exerciser with load/ no load switch	STD
11BG	Programmable engine exerciser with normal and emergency available output contacts
14A/14B	ATS position indicating contacts, (1) for normal, (1) emergency	STD
14AA/14BA	ATS position indicating contacts, (1) for normal, (1) emergency
17	Provisions for remote transfer contact, witch automatic bypass if emergency fails, and normal is acceptable.	STD
27	Inphase monitor for motor load transfer	STD
31F/M	Load disconnect contacts, with TD which operate before/after transfer	STD
33	Ground Lug
37B	6' extension harness
37C	9' extension harness
44A	Strip heater w/ thermostat, external 120V power source required
44G	Strip heaterw/ thermostat, wired to terminals: 208-600V
62W	Transfer to emergency alarm horn & silence switch
73	Series 450 Surge Suppressor rated 65kA
72A	Series module (5110)
72E	Connectivity Module
123	Hinged lockable polycarbonate window frame and weather gasket

ASCO PowerQuest Communications Product Kits for Series 300 Automatic Transfer Switches.

Catalog #	Description	Price
601815	Local Site Converter (RS232 to RS485)
Vpi 32.15E	PowerQuest Software
5220T	5220T Power Manager Xp. Transducer only no display included. Used for interface w/ ASCO monitoring equipment. 24VDC power required.
732862-001	5220D Power Manager Xp. Transducer with display included. Mounted in 16Hx16Wx6.5D enclosure. Single Phase 120Vac power required.
732862-002	5220D Power Manager Xp. Transducer with display included. Mounted in 16Hx16Wx6.5D enclosure. Single Phase 120Vac power required.
5310	Single channel annunciator directly connects Ethernet network. Supports 24VDC, 120VAC and 220VAC, requires 72E module.
5350	Eight channel annunciator directly connects Ethernet network. Supports 24VDC, 120VAC and 220VAC, requires 72E module.

ASCO Accessory Field Conversion Kits for Series 300 Automatic Transfer Switches.

Kit #	Description	Price
K629830	Programmable Engine Exerciser (Acc 11BG)
K613127-001	Strip Heater Kit, (100Watt) 120V (Acc.44A)
K613127-002	Strip Heater Kit, (100Watt) 208-600V (Acc.44G)
K755257	Serial Module (Acc. 72A)
K754603	Connectivity Module (Acc. 72E)
K609027	Cable Pull Box (1600-2000 amp standard front connected switches)
K778330-001	Window Kit (Acc. 123)

ASCO Series 300 Service Entrance Automatic Transfer Switches.

Amps	Type 1 Enclosure
Amps	2 Pole	3 Pole	4 Pole
70
100
150
200
225
250
400
600
800
1000
1200
1600	N/A
2000	N/A
2500	N/A
3000	N/A

ASCO Factory Mounted Control Options for Series 300SE Automatic Transfer Switches.

Acc. #	Description	Price
5	Test Switch	STD
6B	Manual bypass of transfer to normal TD	STD
9A/9B	ATS switch position indicating lights	STD
9C/9D	Source available lights	STD
11C	Auto. engine exerciser with load/ no load switch	STD
11BG	Programmable engine exerciser with normal and emergency available output contacts
14A/14B	ATS position indicating contacts, (1) for normal, (1) emergency	STD
14AA/14BA	ATS position indicating contacts, (1) for normal, (1) emergency
17	Provisions for remote transfer contact, witch automatic bypass if emergency fails, and normal is acceptable.	STD
27	Inphase monitor for motor load transfer	STD
31F/M	Load disconnect contacts, with TD which operate before/after transfer	STD
42TH3	Reduced type 3R secure enclosure for 70-225A frame size only
44G	Strip heaterw/ thermostat, wired to terminals: 208-600V
62W	Transfer to emergency alarm horn & silence switch
72A	Series module (5110)
72E	Connectivity Module
73	Surge Suppression

Accessory 134 100% SE Rated Breaker 300/386
Amp Size	2 Pole List Price Adder	3 Pole List Price Adder
70 - 150
200 - 225
250
400
600 - 800	Contact Application Eng
1000 - 2000	Contact Application Eng

ASCO PowerQuest Communications Product Kits for Series 300SE Automatic Transfer Switches.

Catalog #	Description	Price
601815	Local Site Converter (RS232 to RS485)
Vpi 32.15E	PowerQuest Software
5220T	5220T Power Manager Xp. Transducer only no display included. Used for interface w/ ASCO monitoring equipment. 24VDC power required.
732862-001	5220D Power Manager Xp. Transducer with display included. Mounted in 16Hx16Wx6.5D enclosure. Single Phase 120Vac power required.
732862-002	5220D Power Manager Xp. Transducer with display included. Mounted in 16Hx16Wx6.5D enclosure. Single Phase 120Vac power required.
5310	Single channel annunciator directly connects Ethernet network. Supports 24VDC, 120VAC and 220VAC, requires 72E module.
5350	Eight channel annunciator directly connects Ethernet network. Supports 24VDC, 120VAC and 220VAC, requires 72E module.

ASCO Accessory Field Conversion Kits for Series 300SE Automatic Transfer Switches.

Kit #	Description	Price
K629830	Programmable Engine Exerciser (Acc 11BG)
K613127-002	Strip Heater Kit, (100Watt) 208-600V (Acc.44G)
K755257	Serial Module (Acc. 72A)
K754603	Connectivity Module (Acc. 72E)

ASCO Series 300L Service Entrance Power Transfer Load Center.

Series 300L	Type 1 Enclosure		Type 3R Secure Enclosure
Amp	2 Pole	3 Pole	2 Pole	3 Pole
200
400

ASCO Factory Mounted Control Options for Series 300L Power Transfer Load Centers.

Acc. #	Description	Price
5	Test Switch	STD
6B	Manual bypass of transfer to normal TD	STD
9A/9B	ATS switch position indicating lights	STD
9C/9D	Source available lights	STD
11C	Auto. engine exerciser with load/ no load switch	STD
11BG	Programmable engine exerciser with normal and emergency available output contacts
14A/14B	ATS position indicating contacts, (1) for normal, (1) emergency	STD
14AA/14BA	ATS position indicating contacts, (1) for normal, (1) emergency
17	Provisions for remote transfer contact, witch automatic bypass if emergency fails, and normal is acceptable.	STD
27	Inphase monitor for motor load transfer	STD
31F/M	Load disconnect contacts, with TD which operate before/after transfer	STD
44G	Strip heaterw/ thermostat, wired to terminals: 208-600V
62W	Transfer to emergency alarm horn & silence switch
72E	Connectivity Module
73V*1	Single Phase Surge Suppression 240/120V
73V*3	Three Phase Surge Suppression 208Y-120V
	SQ - D Normal & Emergency source breakers	STD
	SQ - D 42 circuit panelboard (does not include branch breakers)	STD

ASCO PowerQuest Communications Product Kits for Series 300L Automatic Transfer Switches.

Catalog #	Description	Price
601815	Local Site Converter (RS232 to RS485)
Vpi 32.15E	PowerQuest Software
5220T	5220T Power Manager Xp. Transducer only no display included. Used for interface w/ ASCO monitoring equipment. 24VDC power required.
732862-001	5220D Power Manager Xp. Transducer with display included. Mounted in 16Hx16Wx6.5D enclosure. Single Phase 120Vac power required.
732862-002	5220D Power Manager Xp. Transducer with display included. Mounted in 16Hx16Wx6.5D enclosure. Single Phase 120Vac power required.
5310	Single channel annunciator directly connects Ethernet network. Supports 24VDC, 120VAC and 220VAC, requires 72E module.
5350	Eight channel annunciator directly connects Ethernet network. Supports 24VDC, 120VAC and 220VAC, requires 72E module.

ASCO Accessory Field Conversion Kits for Series 300L Power Transfer Load Centers.

Kit #	Description	Price
K629830	Programmable Engine Exerciser (Acc 11BG)
K613127-002	Strip Heater Kit, (125Watt) 208-600V (Acc.44G)
K754603	Connectivity Module (Acc. 72E)
K733433-001	Single Phase Surge Suppression 240-120V
K733433-003	Three Phase Surge Suppression 208Y-120V

ASCO Series 300L Service Entrance Power Transfer Load Center.

Series 300L	Type 4 Secure Enclosure
Amp	2 Pole
50
100

Asco Factory Mounted Control Options for Series 300L Power Transfer Load Centers.

Acc. #	Description	Price
5	Test Switch	STD
6B	Manual bypass of transfer to normal TD	STD
9A/9B	ATS switch position indicating lights	STD
9C/9D	Source available lights	STD
11C	Auto. engine exerciser with load/ no load switch	STD
11BG	Programmable engine exerciser with normal and emergency available output contacts
14A/14B	ATS position indicating contacts, (1) for normal, (1) emergency	STD
14AA/14BA	ATS position indicating contacts, (1) for normal, (1) emergency
17	Provisions for remote transfer contact, witch automatic bypass if emergency fails, and normal is acceptable.	STD
27	Inphase monitor for motor load transfer	STD
31F/M	Load disconnect contacts, with TD which operate before/after transfer	STD
37P1	Appleton generator power input receptacle for 60Amp PTLC (Single Phase)
37P2	Appleton generator power input receptacle for 100Amp PTLC (Single Phase)
37GF	15A, 120V Duplex Outlet from GFCI in Load Center
44A	Strip heaterw/ thermostat, external 120V source required
72E	Connectivity Module
73VL1	Series 458 Single Phase Load Side Surge Suppression 240-120V
73TL1	Series 510 Single Phase Load Side Surge Suppression Line - Neutral Protection (includes 2 TVSS's)
	SQ - D Normal & Emergency source breakers	STD
	SQ - D 24 Circuit load center	STD
128FS	Optional Enclosure Stand for Floor Mounting

ASCO PowerQuest Communications Product Kits for Series 300L Automatic Transfer Switches.

Catalog #	Description	Price
601815	Local Site Converter (RS232 to RS485)
Vpi 32.15E	PowerQuest Software
5220T	5220T Power Manager Xp. Transducer only no display included. Used for interface w/ ASCO monitoring equipment. 24VDC power required.
732862-001	5220D Power Manager Xp. Transducer with display included. Mounted in 16Hx16Wx6.5D enclosure. Single Phase 120Vac power required.
732862-002	5220D Power Manager Xp. Transducer with display included. Mounted in 16Hx16Wx6.5D enclosure. Single Phase 120Vac power required.
5310	Single channel annunciator directly connects Ethernet network. Supports 24VDC, 120VAC and 220VAC, requires 72E module.
5350	Eight channel annunciator directly connects Ethernet network. Supports 24VDC, 120VAC and 220VAC, requires 72E module.

ASCO Accessory Field Conversion Kits for Series 300L Power Transfer Load Centers.

Kit #	Description	Price
K629830	Programmable Engine Exerciser (Acc 11BG)
K732212-003	Strip Heater w/ thermostat, externsl 120V source required
K754603	Connectivity Module (Acc. 72E)
K733433-001	Single Phase Surge Suppression 240-120V

Asco transfer swith illistration

Asco 300 series transfer switch group picture

300 Series Microprocessor Controller

The ASCO Microprocessor Controller is used with all sizes of Power Transfer Switches. It represents the most reliable microprocessor controller in the industry and includes, as standard, all of the voltage, frequency, control, timing and connectivity functions required for most emergency and standby power applications.

Voltage & Frequency Sensing

Adjustable three-phase, close-differential voltage sensing on normal source.
Normal source pickup voltage is adjustable to 95% of nominal; drop-out is adjustable from 70% to 90% of nominal.
Frequency sensing on emergency source. Pickup at 95% and dropout at 85% of nominal.

Time Delays

Adjustable time delay to override momentary normal source outages to delay all transfer switch and engine- starting signals.
Transfer to emergency time delay––Adjustable from 0 to 5 minutes for controlled timing of load transfer to emergency.
Re-transfer to normal time delay––Adjustable to 30 minutes.
Five-minute unloaded running time delay for emergency engine generator cool down.
Four-second time delay to ignore momentary voltage and frequency transients during initial genset loading.

Remote Control Features

Terminal provisions for connecting:

Remote test switch.
Remote contact for test or for peak shaving applications. Circuit will be automatically bypassed if emergency source fails.
Remote time-delay bypass switch.

Control and Display Panel

Easy-to-read flush-mounted control and display panel provides LED indicators for switch position and source avail-ability. It also includes test and time-delay bypass switches.

300 Series Microprocessor Controller

Asco 300 series transfer switch mico processor control

Performance Features

600 volt spacing per UL and CSA standards.
Interfacing relays are industrial grade, plug-in type with dust covers.
Meets or exceeds the requirements for Electromagnetic Compatibility (EMC).

NEMA ICS-109.21 Impulse Withstand Test
Digital circuitry isolated from line voltages
IEC 801-2 Electrostatic discharge (ESD) immunity
ENV50140 and IEC 803-1: Radiated electromagnetic field immunity
IEC 801-4 Electrical fast transient (EFT) immunity

ENV50142 Surge transient immunity
ENV50141: Conducted radio-frequency field immunity
EN55011: Group 1, Class A conducted and radiated emissions
Optically isolated RS-485 Serial Port
EN61000- 4-11 voltage dips and interruptions immunity

Series 300 ATS Optional Accessories

Accessory 11BGA

Programmable engine exerciser that provides for weekly or bi-weekly operation, includes one form C contact for source availability of normal and one contact for availability of emergency (contact rating 2 amps @ 30 Vdc, 0.5 amp @ 125 Vac resistive). The programmable engine exerciser incorporates a 7 day or 14 day time base with a digital readout display. Includes “with or without” load control selection for exerciser period.

Accessory 14AA/14BA

Auxiliary contacts to indicate position of main contacts. Two (2) for normal and two (2) for emergency position (one set is standard).Accessory 44AStrip Heater with thermostat for extremely cold areas to prevent condensation and freezing of this condensation. External 120 volt power source required.

Accessory 44G

Strip Heater with thermostat, wired to load terminals: 208-240, 360-380, 460-480, 550-600 volts. Contains wiring harnesses for all transfer switch sizes.

Accessory 72A/72E

*See “Connectivity Products”, Page 188

Accessory 123A

Protective window that includes a poly-carbonate frame and weather gasket to provide secure access to the membrane interface for the type 1 enclosures. This lockable cover is an alternative to providing 3R secure enclosures.

Asco 300 series engine exerciser Programmable Engine Exerciser with Source Availability Contacts(Accessory 11BG) Asco series 300 accessory strip heater kit
Strip Heater Kit(Accessory 44G) Series 300 tranfer switch window kit

Window Kit(Accessory 123)

series 300SE Power Transfer Switch

The ASCO Service Entrance Power Transfer Switch combines automatic power switching with the necessary disconnecting, grounding, and bonding required for use as service entrance equipment. The power transfer switch meets all National Electrical Code requirements for service entrance use. Transfer switches generally are installed at facilities that have a single utility feed and a single emergency power source.

ASCO SerieS 300SE products use two types of construction.

Products 400 amperes or less, utilize a single enclosure including a service (utility source) disconnect circuit breaker, as well as the power transfer switch, grounding and bonding provisions.

Products 600 amperes and above, utilize a multi-section switchboard construction including a service equipment section containing the service (utility source) disconnect circuit breaker, grounding, and bonding provisions. A second section contains the power transfer switch.

Product Features:

Suitable for use as service entrance equipment. Listed to UL 891 (standard for switchboards) for 600 - 3000 amps, sizes and UL 1008 (standard for panel-boards) for 70 - 400 amps.
Automatic Transfer Switch is listed to UL 1008 for total system loads
Sizes available from 70 - 3000 amps, 600 VAC, 50 or 60 Hz, single or three phase
Silver plated copper ground and neutral bus solderless screw type terminals
Ground fault trip protection provided on sizes 1000 amps and above
Available with solid or switched neutral

Asco series 300 service entrance transfer switch

Asco series 300 se service entrance transfer switch

Series 300L Power Transfer Load Center

ASCO 300L Automatic Power Transfer Load Center shown with optional quick connect Cam - Loc assembly and bottom Telco cabinet section (in type 3R secure aluminum enclosure)

Conventional double throw transfer switch configuation
Automatic Transfer Switch is listed to UL1008, the standard for Trans- fer Switch Equipment, and meets NFPA 110 for Emergency and Standby Power Systems and the National Electrical Code (NEC) Articles 700, 701, and 702. Also certified o CSA 22.2 No. 178
Rated up to 240VAC, 200, or 400 amps
vailable in Type 1 indoor, or Type 3R secure aluminum outdoor enclosure
Reliable and fild proven single solenoid operating mechanism
Programmable microprocessor controller with flsh mounted control and display panel
LED indicators for switch position and source availability
Engine exerciser for weekly auto- matic testing of engine generator set with or without load
Two auxiliary contacts, one con- tact closed when switch is in normal position and one contact closed when switch is in emer- gency position
Suitable as service entrance equipment, includes main circuit breaker overcurrent protection on the normal source, and circuit breaker disconnect device on emergency
Includes a UL 67 Listed 42 position Square - D panelboard load center
Local/remote communications capability for interfacing with ASCO POWERQUEST® communication products

300 Series Power Monitoring & Control

ASCO Connectivity Solutions

ASCO POWERQUEST® communications products allow for the monitoring and control of power transfer switches in your Emergency or Standby Power Distribution System. Local and remote networks are supported with either single or multiple points of access and web-enabled communications allow access to your power system from anywhere around the wor

Monitors and controls Power Transfer Switches and Engine Generators
Monitors normal and emergency voltages and frequency
Indicates transfer switch position and source availability
Provides transfer and re-transfer of loads for system testing
View normal and emergency voltage and frequency settings
View transfer switch time-delay settings
Provides transfer switch rating and identification
Automatic notification of alarms by E-mail
View current, power and power factor with ASCO Power Managers connected to the system

Asco Powerquest Typical Network Architecture

Asco Powerquest network achciture

Series 300 Power Connectivity Products

Asco 300 series transfer swithc monitoring

The 5500 Thin Web Server is a client-server application requiring no software to be installed on the client computer. When combined with ASCO Communication Interface Modules (5110, 5150), it provides the most comprehensive Intranet and Internet communication system for the monitoring and control of power transfer switches and engine generators located in your emergency or standby power distribution system.

The communication system allows multiple client access, from local or remote locations, and provides for the monitoring of up to 64 power transfer switches and eight (8) engine generators. In addition, automatic paging is provided for all alarm signals.

Digital PCS Platform

	ASCO 5110 Serial Interface Module (Acc 72A) The ASCO Serial Interface Module, Catalog No. 5110 (Acc. 72A), enables serial ATS monitoring when used in conjunction with ASCO PowerQuest interface products.
	ASCO 5150 Connectivity Module (Acc 72E) The ASCO Connectivity Module, Catalog No. 5150 (Acc. 72E), provides easy and reliable Ethernet connectivity to ASCO transfer switches for monitoring.
	ASCO 5220 Power Manager Xp The ASCO Power Manager XP, Catalog No. 5220, collects real-time single or three-phase power information for engine-generators, utility, paralleling switchgear and automatic transfer switches.
	ASCO 5310 Remote Annunciator The ASCO 5310 allows you to remotely monitor and test a single ASCO transfer switch via built-in Ethernet technology.
	ASCO 5350 Remote Annunciator The ASCO 5350 facilitates reliable monitoring, testing and control of ASCO transfer switches via built-in Ethernet technology.
	ASCO 5510 Thin Web Server The ASCO 5510 Thin Web Server is an internet-based thin client application, which provides real-time monitoring and control of ASCO transfer switches and engine generators from anywhere in the world. The TWS also logs critical alarms and analog information.
	ASCO PowerQuest 32.15 Power Interface Software The ASCO 32.15 Power Interface is computer-based monitoring and control software package. When combined with ASCO 72E Communications Interface modules and the ASCO 5220 Power Manager, it provides a centralized and comprehensive monitoring and control interface for power transfer switches and engine generators.
	ASCO 5950 Power Control System Management The industrial grade touch screen provides a comprehensive interface to your entire power control system. It extracts critical system information from various ASCO products, generator-sets, breakers, and other third-party devices, while giving the operator the ability of changing system settings and access to control functions. Three-levels of password security are provided for flexible control tier assignments.

Asco Transfer Switch Comparison

Asco 300 Series Transfer switch spec brochure

Open 9:00 AM - 5:00 PM pacific time. 800 341 7027 or 619 669 1995
Payment terms 2% discount for ACH or wire transfer. Visa, Master card accepted.

Hardy Diesels & Equipment Inc

15749 Lyons Valley Rd.

Jamul CA 91935

Toll Free: (800) 341 7027

US: (619) 669 1995

Hardy Diesel Generators

Call: 800-341-7027 or 619-669-1995

Asco 300 Series transfer Switches