Chapter 1
Contactor Product Description
Scope is User Manual pertains to Allen-Bradley's Bulletin 1502, 800A vacuum
contactors. It applies to both Series D and E versions of the Bulletin 1502 (800
Amp) contactors.
Series D vacuum contactors are intended for use with electro-mechanical (relay)
control circuits. They may not be used with IntelliVAC and IntelliVAC Plus
control modules.
Series E vacuum contactors are used with IntelliVAC and IntelliVAC Plus
control only (refer to publications 1503-UM053_-EN-P and 1503-UM054_-EN-P
respectively).
Description Allen-Bradley's Bulletin 1502, 800 amp electrically held and mechanical latch
vacuum contactors are designed for high horsepower applications in the 2400 to
7200 voltage range. ese contactors are suitable for all types of AC loads, for
example: three phase motors, transformers, power capacitors and resistive
heating loads. Mechanically latched contactors are used mainly in situations
requiring the contactor to remain closed in the event of power failure.
e contactor uses three (3) interrupters (hereaer referred to as vacuum bottles)
operated by an electromagnet assembly through a mechanical linkage. ey are
resistant to adverse atmospheric conditions and provide a long mechanical and
electrical life.
e contactors are utilized in various starter and drive congurations, e.g. full
voltage non-reversing, full voltage reversing, two-speed, reduced voltage, synchro-
nous, drive input/output and bypass applications. ey are xed mounted
within the structures and the line and load terminations are made at the rear of
the device. In most congurations, the main contactor is mechanically inter-
locked with the external operating handle and isolating switch.
Figure 1.1 – 800A Contactor
1502-UM051D-EN-P – December 2009
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