Why Choose the ABB MARN431AT 1SAL100990R9906 Auxiliary Contact?
The ABB MARN431AT 1SAL100990R9906 is a compact four-pole auxiliary contact block designed for switching auxiliary and control circuits in standard industrial environments. Featuring 3 normally open (NO) and 1 normally closed (NC) contacts, it provides additional switching contacts for signalling, interlocking and control functions.
The MARN431AT is designed for front mounting and uses screw terminals for its electrical connections. It is suitable for ABB MCR miniature contactor relays as well as MC1 and MC2 miniature contactors, providing a practical way to expand the available auxiliary contacts within industrial control systems.
With a conventional free-air thermal current of 10 A and a rated operational current of 6 A at AC-15, 230 V, the MARN431AT is designed for dependable operation in auxiliary control circuits. Its contact arrangement meets the requirements of EN 50005, while its compact 27 × 45 × 35 mm dimensions support space-efficient installation.
Key Advantages
- Compact four-pole auxiliary contact block for industrial control circuits.
- 3NO/1NC contact configuration for signalling, interlocking and control functions.
- Front-mounted design for straightforward installation.
- Secure screw terminal connections.
- 6 A rated operational current at AC-15, 230 V.
- Contact arrangement meets the requirements of EN 50005.
Key Features
- ABB MARN431AT auxiliary contact block.
- 3 normally open and 1 normally closed contacts.
- 10 A conventional free-air thermal current.
- 6 A rated operational current at AC-15, 230 V.
- Front-mounted configuration.
- Screw terminal electrical connections.
- 0.8 N·m auxiliary circuit tightening torque.
- Maximum permitted operating altitude of 3000 m.
Reliable Auxiliary Control for Industrial Applications
Auxiliary contact blocks provide additional switching contacts for control, signalling and interlocking functions within electrical control systems. They allow contactor operating states and control signals to be incorporated into machine logic without relying on the main power contacts for auxiliary switching duties.
The ABB MARN431AT combines four auxiliary contacts in a compact front-mounted format. Its 3NO/1NC configuration is particularly useful for applications requiring multiple normally open signals together with a normally closed contact for control logic, status indication or electrical interlocking.
Typical Applications
- Industrial auxiliary and control circuits.
- Contactor status signalling.
- Electrical interlocking circuits.
- Machine control panels.
- Industrial automation systems.
- Motor control and switching assemblies.
