GE AB49 Auxiliary Contact Block Unit

Module Feature

AB49 is a GE auxiliary contact block. It is a matching accessory for GE contactors and motor starters, used to provide auxiliary dry contact signals for status feedback, interlock and alarm circuits. It adopts mechanical linkage structure linked with contactor main moving contact. When contactor pulls in or drops out, the auxiliary contact synchronously switches. The contact material is silver alloy, with anti-arc performance and long mechanical life. Compact snap-on installation structure, easy to assemble on the side of GE contactor. Widely applied in motor control cabinet, power distribution control circuit and industrial motor starter system.

Working principle

When the GE contactor coil is energized and pulls in, the mechanical linkage drives AB49 auxiliary contact to act synchronously, normally open contact closes and normally closed contact opens. When coil power cuts off, contactor releases, spring resets auxiliary contact to original state. The auxiliary contact transmits contactor working status signal to PLC, indicator light or interlock protection circuit.

Onboard components

Silver alloy contact group, mechanical linkage lever, reset spring, flame retardant plastic housing, fixed mounting clip, terminal screw lugs.

LED indicators

No LED indicators.

Hardware self-diagnosis

Contact burnout, contact poor conduction, mechanical jamming, open circuit inspection, resistance measurement of contact terminals.

Programming software

No configuration software required.

Electrical & Process Parameters

Model:AB49 Brand:GE Device type:Contactor Auxiliary Contact Block Rated control voltage:250VAC/220VDC Contact type:NO / NC dry contact Protection:Contact arc resistance, mechanical vibration resistance

Mechanical & Structure

Mounting:Side snap-on mount for GE contactor Protection class:IP20 Housing:Flame retardant plastic enclosure

Environmental

Operating temperature:-20℃ ~ +60℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non-condensing Certification:CE,UL compliant Status: GE original auxiliary contact block for contactor and motor starter

Installation

Cut off all power supply before replacement. Snap GE AB49 auxiliary contact block onto the side of matched GE contactor. Tighten signal wires to terminal lugs. Test contactor pull-in and release action, verify auxiliary contact switching function before power on.

Interface

Auxiliary signal screw terminal lugs.

Diagnostic

No status signal: contact ablation or mechanical linkage stuck. Intermittent signal: loose wiring or contact surface oxidation. Contact fails to switch: spring fatigue or mechanical jam.

Product Brief

GE AB49 auxiliary contact block, snap-on side mount for GE contactor/motor starter, provides NO/NC dry contact for equipment status feedback and interlock control.