ABB – WB75‑A (FPTN372726R1004) – Mechanical Latching Unit, 110 V AC/DC, AX06–AX8

The ABB WB75‑A (part number FPTN372726R1004) is a mechanical latching module that converts standard ABB A-series contactors into latching-type contactors. Compatible with AX06 through AX80 contactor frames, this unit maintains contactor engagement even after the control voltage is removed and provides a manual reset option via a reset button.

This accessory is ideal for applications where latching behavior is required for reliability or power-saving purposes.

Key Features:

• Model / P/N: WB75‑A (FPTN372726R1004)  

• Voltage Type: 110 V AC (50 Hz), 110–127 V AC (60 Hz), or 110 V DC  

• Tri-Voltage Rating Plate: Supports AC, AC 60 Hz, and DC versions  

• Compatible Contactors: ABB AX-series (A9–A75, AF9–AF65, AL9–AL40, etc.)  

• Mechanical Latch Function: Holds contactor closed even if coil voltage is removed; manual or electrical reset via plunger/button

• Mounting: Clicks onto contactor body; screw terminals for coil and latch wiring  

• Dimensions & Weight: 45 mm × 81 mm × 39 mm; ~0.12 kg  

• Standards & Compliance: CE, UL-recognized, RoHS; HS code 85389099