Specification

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A-1536 (1/08)

Transfer switch mechanism

• A powerful and economical solenoid powers RSS Transfer Switches.

• Independent break-before-make action is common for 2-pole.

• Mechanical interlock prevents simultaneous closing of normal and

emergency contacts.

• Electrical interlocks prevent simultaneous closing signals to normal and

emergency contacts and interconnection of normal and emergency

sources through the control wiring.

• Long-life, high pressure, silver alloy contacts resist burning and pitting.

Contacts are mechanically held in both normal and emergency positions

for reliable, quiet operation.

Specifications

Voltage rating

Transfer switches up to 240 VAC, 50 Hz or 60 Hz.

Amperage rating

Transfer switches rated for 100 and 200 continuous amperes.

Arc interruption

Multiple leaf arc chutes cool and quench the arcs. Barriers prevent interphase flashover.

Neutral bar

A full current-rated neutral bar is standard on enclosed 2-pole transfer switches.

Auxiliary contacts

Two contacts rated at 5A continuous at 100 VAC or 2.5A continuous at 200 VAC (one for each source) are

provided for customer use. Wired to terminal block for easy access.

Storage temperature

-25

C (-13

F) to 55

C (131

Humidity

Up to 90% @ 20

Altitude

Up to 2,000 m (6,561 ft) without derating

Total transfer time (source-

to-source)

Will not exceed 100 msecs with normal voltage applied to the actuator.

Manual operation handles

Transfer switches are equipped with a removable operating handle which allows operation during

servicing in order to facilitate troubleshooting with sources of power disconnected