Siemens 3WL9111-0AF04-0AA0 Closing Coil

Overview

The Siemens 3WL9111-0AF04-0AA0 is an original closing coil accessory for the Siemens SENTRON 3WL air circuit breaker series. This 3WL9111-0AF04-0AA0 is designed for remote electrical closing operation of the 3WL ACB, with a rated control voltage of 208–240 VAC and 220–250 VDC. It triggers the spring operating mechanism to close the breaker contacts once energized. It is a replaceable internal spare part for low‑voltage switchgear, process skids, power distribution and DCS feeder systems.

Features

The Siemens 3WL9111-0AF04-0AA0 is a dedicated closing coil for SENTRON 3WL air circuit breakers.3WL9111-0AF04-0AA0 supports dual voltage range: 208–240 VAC and 220–250 VDC. Short‑time energization design, suitable for pulse closing command control. Matched mechanical interface, direct drop‑in replacement inside the breaker mechanism compartment. Built‑in surge suppression to reduce interference to surrounding control circuits. Compatible with fixed and withdrawable 3WL frame versions. Compliant with IEC 60947, UL, CSA and CE standards for low‑voltage switchgear accessories.

Specs

Device Type: Closing Coil Model: Siemens 3WL9111-0AF04-0AA0 Brand: Siemens Series: SENTRON 3WL Rated voltage: 208–240 VAC / 220–250 VDC Function: Remote electrical closing of air circuit breaker Applicable device: 3WL air circuit breaker Mounting: Internal assembly on breaker operating mechanism Status: Genuine Siemens ACB spare accessory

Principle

The Siemens 3WL9111-0AF04-0AA0 converts electrical pulse signals into mechanical pulling force. When the coil receives a closing pulse command, it actuates the latch of the spring stored‑energy mechanism, releasing the spring energy to drive the main contacts to close. It only accepts short pulse excitation; continuous energization will cause coil damage.

Applications

The Siemens 3WL9111-0AF04-0AA0 is used for maintenance and retrofit of 3WL air circuit breakers in low‑voltage switchgear rooms, power distribution skids, industrial plants and DCS feeder cabinets. The 3WL9111-0AF04-0AA0 is stocked as spare replacement for remote closing control circuits of the 3WL breaker.