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Power Transfer Switches

Automatic transfer switches and non-automatic transfer switches

 

Reliably transfer business-critical loads to emergency sources with our line of industry-leading automatic transfer switches and non-automatic transfer switches. ASCO automatic transfer switches and non-automatic transfer switches from Emerson Network Power are applicable in many environments, ranging from residential, agricultural and light commercial applications to the critical power needs of healthcare, financial and data center facilities.

Get the advantage of having an emergency power system equipped by best-in-class technology with ASCO transfer switches. ASCO 7000 Series Power Transfer Switches are available in bypass-isolation configurations to allow testing testing of the switch without interrupting power to the load. When an integrated solution is required, ASCO Power Transfer Load Centers are available in configurations that can include a transfer switch load panel, circuit breakers and voltage surge suppression pre-wired in a compact package.

 
Additional Information
Power Transfer Switch Comparison
Factors to Consider in the Selection and Application of Power Transfer Switches Selecting The Right Enclosure For Your Power Transfer Switch
 

Power Transfer Switches

Power Transfer Switches
The ASCO 7000 Series Power Transfer Switch is available in the conventional, two-position transfer configuration, and closed or delayed transition modes of operation. Additionally, switched or overlapping neutral options provide for reliable operation of ground fault protection systems and reduction of voltage transients from unbalanced load switching. Click here to read an article describing the sizing considerations when using a closed transition mode of operation.
 
 
ASCO 7000 Series Soft Load Power Transfer Switch
Power Transfer Switch

The ASCO 7000 Series Service Entrance Power Transfer Switch combines automatic power switching with a disconnect and overcurrent protective device on the utility source. It uses the same reliable transfer switching mechanism and controller as the 7000 Series product platform. It also includes a utility circuit breaker as a disconnect device and links for connecting both neutral and ground conductors.

The 7000 Series Service Entrance Power Transfer Switch is UL 891 listed and is available up to 600V and 4000A in Standard, Delayed, Closed Transition, Soft Load, and Bypass Isolation configurations.It meets all National Electrical Code requirements for installation at a facility's main utility service entrance and is generally installed at facilities that have a single utility feed and a single emergency power source.

 
 
ASCO 7000 Series Soft Load Power Transfer Switch
ASCO 7000 Series Soft Load Power Transfer Switch

The ASCO 7000 Series Soft Load Power Transfer Switch synchronizes and parallels two independent power sources without interrupting power flow. The switch can be programmed to either maintain parallel operation of both power sources, or transfer the load to the onsite generating unit, avoiding transients caused by block loading.

Coupled with Web-enabled ASCO SiteWeb command and control, the Soft Load Power Transfer Switch enables onsite generation unit for soft load transferring, base loading, importing or exporting.

 
 
ASCO Medium Voltage Transfer Switches
Medium Voltage Transfer Switches

ASCO protects medium voltage loads by offering maintainable and highly proven power transfer switches. The switches can be configured with protective relays and other options to meet specific project requirements.

Switching at medium voltage is often preferred when most loads in a facility require protection, or when protected power is needed at distances. By placing the switch near the source, often outside, and often with service entrance, many costly installation complications can be avoided.

 
 
ASCO 4000 Series Power Transfer Switch
4000 Series Power Transfer Switch

ASCO Power Transfer Switches are the standard of the industry. High speed transfer of loads between alternate sources of power, regardless of ampacity size, is achieved by a reliable, field proven solenoid operating mechanism. 

When combined with a programmable microprocessor controller with keypad and LCD display, they offer the most advanced method of transferring all types of loads, such as motors, electronic drives, UPSs and microprocessor based systems. 

4000 Series Power Transfer Switches are available open or enclosed, in ampacity sizes from 30 through 4000 amperes with a limited selection of optional accessories.

 
 
ASCO Series 300 Power Transfer Switch
ASCO Series 300 Power Transfer Switch

The ASCO Series 300 was designed to automatically transfer critical loads in the event of a power outage. It is also designed to handle total system loads including motors and other high inrush and inductive loads.

The ASCO Series 300's modular, compact design makes it easy to install, inspect and maintain-- all parts are accessible from the front so switch contacts can be easily inspected.

The ASCO Series 300 assure the user of many years of reliability through its rugged construction and proven performance.

 
 
ASCO Series 300SE Service Entrance Power Transfer Switch
Service Entrance Power Transfer Switch

The ASCO Series 300SE Service Entrance Power Transfer Switch combines automatic power switching with a utility circuit breaker as a disconnect device. The power transfer switch meets all National Electrical Code requirements for installation as service entrance equipment. Service entrance rated transfer switches are generally installed at facilities that have a single utility feed and a single emergency power source.

The ASCO Series 300SE Service Entrance Power Transfer Switch uses the same reliable transfer switching mechanism, and controller as the series 300 product platform.

 
 
ASCO Series 300L Power Transfer Load Center
ASCO Series 300L Power Transfer Load Center
The ASCO Series 300L Power Transfer Load Center has everything that is needed to protect sensitive loads from power outages and transients in one package: World-class ASCO Series 300 Automatic Power Transfer Switch with microprocessor digital controller, versatile Square D Load Distribution Panel, and protective transient voltage surge suppression for normal and emergency operation. It is available in 200 or 400 amp rating, 120/240 VAC 60 Hz single phase, 3 wire or 120/208 VAC, 60 Hz three phase, 4 wire.

The ASCO Series 300L Power Transfer Load Center includes a 42-position load distribution panel. When power fails, the UL 1008 listed automatic transfer switch follows user-set time delays to start the generator, transfer the load to the generator, reconnect to utility power and shut down the generator after generator cool down.
 
 
ASCO Series 386 Non-Automatic Power Transfer Switch
ASCO Series 386 Non-Automatic Power Transfer Switch
The ASCO Series 386 Non-Automatic Power Transfer Switch is generally used in applications where operating personnel are available and the load is not an emergency type requiring automatic transfer of power. The power-switching mechanism and controller of ASCO Series 386 is the same hardware used on the highly reliable ASCO Series 300 transfer switches. As a standard, the ASCO Series 386 is furnished with a momentary-type selector switch to initiate transfer and retransfer. It can also be arranged for remote control via ASCO's communications products.
 
 
ASCO Series 185 Power Transfer Switch
ASCO Series 185SE Service Entrance Power Transfer Switch

The ASCO Series 185SE Residential Service Entrance Power Transfer Switch combines the series 185 automatic transfer switch with circuit breaker disconnect device for the normal source. An additional circuit breaker for the emergency source in optional. In addition, main jumper is provided to connect both the neutral and ground conductors in accordance with NEC requirements for service entrance equipment. For use on Optional Standby Systems as defined by NFPA 70: National Electrical Code (NEC).

Service entrance rated transfer switches are generally installed at locations that have a single utility feed and a single emergency power source.

The ASCO Series 185SE Service Entrance Automatic Transfer Switch uses the same reliable transfer switching mechanism and controller as the Series 185 product platform, and also includes a circuit breaker as a utility source disconnect device.Series 185SE Service Entrance Power Transfer Switch

 
 
ASCO Series 185SE Service Entrance Power Transfer Switch
ASCO Series 185 Power Transfer Switch

Residential power outages can jeopardize homeowner personal safety and comfort, and also cause millions of dollars in damages to small businesses each year. Computers, communications, air conditioning, security systems, refrigerators and freezers, hot water heaters and sump pumps all depend on electrical power to operate. A generator is one piece of the solution.

An ASCO Series 185 Power Transfer Switch is the other, the vital link that makes continuous power hassle free. ASCO Series 185 Power Transfer Switches provide all the intelligence your generator needs to make sure the power stays on when utility power fails. Sensing the loss of utility power and signaling the generator to start and restore power to your home or business – even if no one is home. When utility power has been restored, the Series 185 Power Transfer Switch automatically transfers your vital loads back to the utility and shuts the generator down.

Working hand in hand with virtually every brand of generator, ASCO Series 185 Power Transfer Switches provide around-the-clock protection from a power failure, taking action only when required.

For loads in excess of 400A, critical power and three phase Article 701 and 702 applications, use the ASCO 300, 4000 and 7000 Series products.

 
 
ASCO Series 185L Power Transfer Load Center
ASCO Series 185L Power Transfer Load Center

The ASCO 185L Power Transfer Load Center is a completely integrated package which incorporates the Series 185 Automatic Transfer Switch with microprocessor controller. A Square D load distribution panelboard with utility and generator disconnect breakers. And optional transient voltage surge suppression for protection of load circuits.

The ASCO Series 185L provides the intelligence and protection your generator needs in one complete package to insure automatic or manual transfer and continuous power when the utility fails.

Available with a 200 amp rating, 120/240 VAC 60Hz single phase, 3 wire.

 
 
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