ABB AUX-C Auxiliary Contact 2Q+2SY+1S51 1SDA066438R1 XT2-XT4

Overview
The ABB AUX-C auxiliary contact block (1SDA066438R1) is designed for ABB XT2 and XT4 molded case circuit breakers (MCBs) and switch-disconnectors. It provides comprehensive status signaling with 2 changeover contacts for open/closed position, 2 changeover contacts (SY) for trip indication, and 1 normally open contact (SA) for trip indication with voltage presence detection. Rated for 250 V AC/DC, this accessory is suitable for fixed or plug‑in breaker versions, enabling reliable remote monitoring and interlocking in industrial electrical systems.

Key Features

• Complete Signaling Package – 2 changeover contacts (open/closed), 2 changeover contacts (trip indication SY), and 1 normally open contact (trip indication SA).

• Wide Voltage Compatibility – 250 V AC/DC, suitable for both AC and DC control circuits.

• Dedicated for XT2‑XT4 – Designed for fixed and plug‑in versions of ABB XT2 and XT4 breakers.

• Pre‑wired – Ready for direct connection to the circuit breaker, simplifying installation.

• Compact Design – Space‑saving accessory that mounts directly on the breaker.

• Original Brand New, Within Warranty Period – Genuine ABB product, brand new in sealed packaging, covered by manufacturer's warranty.

• 100% Satisfaction Guarantee – Your purchase is protected by our satisfaction guarantee; return or exchange if not completely satisfied.

Technical Specifications

• Product Type: Auxiliary Contact Block

• Model: AUX-C 2Q+2SY+1S51

• Order Code: 1SDA066438R1

• Contact Configuration:

  • 2 changeover contacts (open/closed)

  • 2 changeover contacts (trip indication SY)

  • 1 normally open contact (trip indication SA with voltage detection)

• Rated Voltage: 250 V AC/DC

• Compatibility: ABB XT2, XT4 circuit breakers (fixed and plug‑in versions)

• Mounting: Direct on breaker

Applications
Ideal for remote status indication, interlocking, and monitoring of circuit breakers in industrial control panels, motor control centers, and distribution boards.

Package Includes

• 1 x ABB AUX-C Auxiliary Contact Block (1SDA066438R1)