Why Choose the ABB 1SAL100987R9906 MARN404AT Auxiliary Contact Block?
The ABB 1SAL100987R9906, manufacturer model MARN404AT, is a compact 4-pole auxiliary contact block designed for front mounting on compatible ABB mini contactors and mini contactor relays. It provides four normally closed auxiliary contacts for use in auxiliary and control circuits within industrial automation, motor control and electrical panel applications.
The MARN404AT features 4 NC instantaneous contacts with contact designation according to EN 50005. Its front-mounted, clip-on design provides a straightforward way to expand the auxiliary switching capability of compatible ABB contactors without requiring separate panel-mounted relays.
Rated for an operational current of 6 A at 230 V AC-15, the MARN404AT uses secure screw-terminal connections and provides an IP20 degree of protection. Its compact 27 × 45 × 35 mm construction makes it suitable for space-conscious control-panel installations.
Key Advantages
- Compact 4 NC auxiliary contact block for auxiliary and control circuits.
- Front-mounted design for straightforward integration with compatible ABB mini contactors.
- 6 A rated operational current at 230 V AC-15.
- Four normally closed contacts provide additional signalling, interlocking and control functionality.
- Screw-terminal connections provide secure and reliable wiring.
- Contact designation meets the requirements of EN 50005.
Key Features
- ABB MARN404AT auxiliary contact block.
- 4 normally closed contacts.
- 0 normally open contacts.
- Instantaneous auxiliary contact operation.
- 6 A operational current at 230 V AC-15.
- 10 A conventional free-air thermal current for the auxiliary circuit.
- IP20 degree of protection.
- Screw-terminal connections.
- Front fastening and clip-on construction.
- Maximum electrical switching frequency of 360 cycles/hour for AC-15 and DC-13.
- Operating temperature range of -40 to +70 °C.
- Maximum permissible operating altitude of 3000 m.
Reliable Auxiliary Switching for Control Circuits
Auxiliary contact blocks such as the ABB MARN404AT expand the available control contacts on a compatible contactor or contactor relay. Its four normally closed contacts can be incorporated into electrical control circuits for functions such as interlocking, status signalling, sequencing and control logic.
The MARN404AT is designed for front mounting and uses screw terminals for dependable field wiring. With a 6 A AC-15 operational rating at 230 V, IP20 protection and four NC contacts in a compact housing, it provides a practical solution for machine builders, panel builders and automation engineers requiring additional auxiliary switching capability.
Typical Applications
- Motor control and starter circuits.
- Electrical interlocking circuits.
- Industrial machinery and automation systems.
- Contactor status and control circuits.
- PLC and relay control systems.
- Industrial electrical control panels.
