Why Choose the ABB MCRA040AR6 Mini Contactor Relay?
The ABB 1SAH102178R9900, type MCRA040AR6, is a compact four-pole mini contactor relay designed for control functions and the switching of small electrical loads in residential, commercial and industrial applications. Part of ABB’s MCRA..R range, its space-saving construction provides high switching performance where control-panel space is limited.
The MCRA040AR6 features four normally open contacts (4NO) and an AC-operated control circuit. Special screw terminals are provided for connection with ring-tongue ferrules, offering a secure wiring arrangement for control and signalling circuits.
With a rated control circuit voltage of 220–230 V AC at 50/60 Hz, the MCRA040AR6 is designed for control functions and switching small loads up to 6 A at 240 V AC in AC-15 applications. Its compact 48 × 45 × 56.2 mm construction is suitable for rail or wall mounting, providing flexible integration into electrical control assemblies.
Key Advantages
- Compact four-pole mini contactor relay for control applications.
- Four normally open (4NO) contacts for multiple auxiliary switching functions.
- 220–230 V AC, 50/60 Hz control circuit for AC-operated systems.
- Suitable for switching control signals and small loads up to 6 A at 240 V AC (AC-15).
- Special screw terminals support secure connection with ring-tongue ferrules.
- Suitable for rail or wall mounting and expandable with additional auxiliary contacts.
Key Features
- ABB MCRA..R mini contactor relay range.
- MCRA040AR6 product type.
- Four-pole contactor relay.
- 4NO auxiliary contact configuration.
- 220–230 V AC rated control circuit voltage at 50 Hz.
- 220–230 V AC rated control circuit voltage at 60 Hz.
- AC-operated control circuit.
- Designed for switching control signals and small loads up to 6 A at 240 V AC (AC-15).
- Special screw terminals for ring-tongue ferrules.
- Supports additional front- or side-mounted auxiliary contact blocks.
- Suitable for rail or wall mounting.
Compact Control Switching for Electrical Systems
Mini contactor relays such as the ABB MCRA040AR6 provide multiple electrically operated contacts for switching control signals and small electrical loads. The four normally open contacts allow several control circuits to change state simultaneously when the 220–230 V AC control circuit is energised.
The ABB MCRA..R range combines compact four-pole construction with ring-tongue terminal connections and flexible installation. Additional auxiliary contact blocks can be mounted at the front or side, allowing up to six additional contacts to be added where more switching functions are required.
Typical Applications
- Industrial machinery control circuits.
- Automation and control panels.
- Residential building control systems.
- Commercial building electrical controls.
- Switching of control signals and small electrical loads.
- OEM machinery and compact electrical assemblies.
