ABB Auxiliary Contact Block, AUX-SA-C 1 CO, 250V, 1SDA066429R1

This auxiliary contact Block provides an add‑on switching contact for contactor control circuits in industrial electrical panels. It is designed to furnish an additional changeover contact for signalling or interlocking tasks within control systems used alongside XT2 and XT4 contactors. The unit is suitable for integration into motor control and automation assemblies requiring a compact, low‑voltage signalling contact.

• Single changeover contact for simple auxiliary signalling
• Rated for operation at 250V to match control circuit voltages
• Conforms to IEC 60947-2 for standardised electrical behaviour
• Compatible mounting with XT2 and XT4 contactors for easy integration
• Compact form supporting space‑efficient control panels

• Suitable for adding status feedback to contactor coils in motor control
• Ideal for use in automation cabinets requiring extra changeover contacts
• Used with XT2 series contactors to extend switching capability
• Can be used for interlock and alarm circuits in electrical installations

It supplies a single changeover contact arrangement, enabling one common contact to switch between two outputs for signalling or interlocking.

Its electrical characteristics comply with IEC 60947-2 requirements, ensuring consistent switching behaviour under specified test conditions.

The unit is designed for direct compatibility with XT2 and XT4 contactor families, allowing straightforward attachment to extend contact functionality.

Control and signalling circuits should be operated at up to 250 V, matching the contact block's voltage rating for reliable operation.