ABB 1SDA038292R1 YC-1SDA038302R1 Closing Coil & Shunt Release

Overview

The ABB 1SDA038292R1 is a closing coil, and 1SDA038302R1 is a shunt trip release, designed for ABB Emax series air circuit breakers. The ABB 1SDA038292R1 receives control voltage to drive the closing mechanism and close the breaker. The 1SDA038302R1 shunt release energizes to trip the breaker remotely. Both are standard accessory kits for Emax ACBs, widely stocked for panel retrofit, breaker maintenance and emergency replacement in power distribution switchboards, generator paralleling systems and industrial main electrical rooms.

Features

The ABB 1SDA038292R1 closing coil provides electromagnetic force to actuate the breaker closing spring mechanism. The 1SDA038302R1 shunt trip is used for remote electrical tripping, interlock protection and emergency shutdown. They adopt compact form factor matching the internal installation space of ABB Emax breakers. The coils are manufactured with high-grade insulation and vibration resistance, suitable for continuous use in low-voltage main switchgear. The terminal layout and mounting dimensions follow ABB original specifications, supporting direct replacement without modification of the breaker frame. Multiple voltage variants are available to match different control supply requirements.

Specs

Device Type: Closing Coil + Shunt Release Accessory Model: ABB 1SDA038292R1 (Closing Coil), 1SDA038302R1 (Shunt Trip) Brand: ABB Applicable Product: ABB Emax series air circuit breaker Function: Remote closing / remote shunt tripping Insulation Class: Industrial high insulation grade Mounting: Internal fitting inside ACB Operating Temperature: -20°C ~ +60°C Application: Low-voltage main distribution switchgear

Principle

When the ABB 1SDA038292R1 closing coil is energized, electromagnetic force releases the stored closing spring and drives the contact mechanism to close the circuit breaker. When the 1SDA038302R1 shunt release receives the trip signal, its electromagnetic action triggers the breaker trip mechanism, opening the main contacts to cut off the power supply. Both accessories only execute mechanical action commands; the protection logic is defined by the breaker protection unit and external control circuit.

Applications

The ABB 1SDA038292R1 closing coil and 1SDA038302R1 shunt release are installed inside ABB Emax air circuit breakers in main power distribution cabinets, generator control panels, marine switchboards and industrial power centres. They are stocked as spare parts for breaker overhaul, remote control circuit modification and emergency maintenance of low-voltage distribution systems.