ABB AF1350-30 Power Contactor Unit

Module Feature

AF1350-30 is the large-capacity 3-pole contactor of ABB AF series.

It adopts universal wide-range coil technology, stable pull-in under large control voltage fluctuation. Rated AC-1 current 1350A, AC-3 475kW@400V, suitable for fan, pump, compressor, crusher and main distribution circuit switching. It can be matched with thermal relays and auxiliary contacts for complete motor control and protection scheme.

Working principle

When control coil is energized, electromagnetic mechanism pulls main contacts closed to switch on three-phase load.

When coil loses power, main contacts open to cut off load circuit. The contactor itself does not provide overcurrent protection, needs to cooperate with external protective components.

Onboard components

Main silver alloy contact assembly, arc extinguishing chamber, electromagnetic coil, iron core, auxiliary contact socket, wiring terminal block.

LED indicators

No built-in LED, status indication depends on matched auxiliary contacts or external HMI.

Hardware self‑diagnosis

No onboard self-diagnosis, contact adhesion, coil burnout and phase anomaly are detected by upper control and protection circuit.

Programming software

ABB Engineering Tool, used for circuit logic design and system commissioning.

Electrical & Process Parameters

Model:AF1350-30 Brand:ABB Device type:3-pole power contactor Insulation voltage:1000V AC AC-1 rating:1350A AC-3 rating:475kW @400V Function:AC motor start-stop and power circuit switching

Mechanical & Structure

Mounting:Cabinet internal screw mounting

Protection class:IP20

Housing:Flame retardant plastic and metal contactor housing

Environmental

Operating temperature:-25℃ ~ +70℃

Storage temperature:-40℃ ~ +85℃

Ambient humidity:5~95% non‑condensing

Certification:CE, UL, IEC

Status:Original ABB heavy duty automation spare

Installation

Install contactor vertically inside control cabinet.

Connect three-phase main power, motor cable and control coil wiring, check contact closing sequence and insulation resistance before energizing.

Interface

3-phase main power terminals, motor output terminals, control coil terminals, auxiliary contact slot.

Diagnostic

Fail to pull in: Damaged coil, insufficient control voltage or mechanical jam.

Contact overheat: Overload current, loose terminal wiring or contact ablation.

Noise alarm: Unstable control voltage or broken short-circuit ring.

Product Brief

ABB AF1350-30 3-pole heavy duty contactor, 1350A AC-1 large capacity switching device for pump and compressor cabinet replacement.