ABB 3HAC039833-001 AF9 Contactor

Contactor for ABB IRC5 Robot Controller Cabinet

Specifications

Industrial Applications

• Power-circuit switching inside the ABB IRC5 robot controller cabinet.
• Replacement of a failed, chattering or welded contactor in an IRC5 cabinet.
• Preventive maintenance where contactors are inspected and renewed on a schedule.
• Used wherever ABB specifies the AF9 contactor (article 3HAC039833-001) as the IRC5 cabinet contactor.

Design Purpose

An IRC5 controller cabinet switches substantial power to the drives, the main computer and auxiliary circuits. A contactor is the electromechanical switch that makes and breaks those circuits on control signals, isolating power safely during stop, service or fault. A defined ABB spare (AF9) is specified so the cabinet's switching behavior stays within the original design margins.

Because this contactor is defined by its article number and replaces specific older numbers, it is a fitment-specific spare, not a generic relay. The correct part is tied to the exact contactor called out in the cabinet documentation, so it must be matched by article number and application rather than by a generic "contactor" description. This is a confirmed-fitment spare, verified against the cabinet's parts list, not a universal contactor.

Common Failure Modes

• Coil failure / contactor not pulling in (open coil, control-supply loss).
• Contacts welded or pitted from overload or inrush current.
• Chattering / intermittent dropout from weak coil or control issue.
• Contact erosion or overheating from prolonged load or poor connection.
• Mechanical seizure / stuck armature from dust, vibration or ageing.
• Wrong contactor fitted (article / rating mismatch) causing no-go or damage.

Why Choose Us

• Genuine ABB 3HAC039833-001 AF9 contactor — the defined IRC5 cabinet contactor, not a generic substitute.
• Fitment confirmation: we verify the contactor article number and application from your cabinet documentation so you receive the correct part.
• Condition confirmed before ordering (new original or used original); quotation-based supply with no stock or dispatch-time promises.
• Backed by the IRC5 controller spares we supply across the ABB robot range.

Related Products

• 3HAC025097-001 — ABB DSQC639 main computer (IRC5 cabinet, same controller family).
• 3HAC026525-001 — ABB IRC5 controller cooling fan (same cabinet cooling).
• 3HAC041443-003 — ABB DSQC639 computer cabinet with housing (the cabinet this contactor sits in).
• Not sure which IRC5 cabinet contactor your unit needs? Send the cabinet type / existing contactor article number and we confirm the correct spare — including whether 3HAC039833-001 is the right contactor for your unit.