Why Choose the ABB 1SAH100532R9900 PLC-Controlled Mini Contactor Relay?
The ABB 1SAH100532R9900, also designated MCRI022ATD, is a compact four-pole mini contactor relay designed for switching control signals and small loads in industrial automation, machinery and building-control systems. Its low-consumption DC coil enables direct control from a compatible programmable logic controller.
This contactor relay incorporates two normally open and two normally closed auxiliary contacts, providing a versatile arrangement for switching, signalling and electrical interlocking. Screw terminals simplify control-panel wiring, while its compact construction suits installations where available space is limited.
With a 24 V DC control coil consuming 1.2 W, the MCRI022ATD is suitable for direct PLC operation without an intermediate coupling relay where the PLC output has the required capacity. It supports AC-15 control loads up to 6 A at 240 V AC and can be installed on a DIN rail or mounting surface.
Key Advantages
- Low-consumption 1.2 W coil supports direct PLC control.
- 2NO + 2NC contact arrangement suits flexible control logic.
- Compact four-pole construction saves control-panel space.
- 24 V DC control voltage suits industrial automation systems.
- Screw terminals simplify installation and maintenance.
- Suitable for DIN-rail or wall mounting.
Key Features
- ABB MCRI mini contactor relay series.
- Two normally open and two normally closed contacts.
- 24 V DC PLC-compatible control coil.
- Coil holding and pull-in consumption of 1.2 W.
- 6 A AC-15 rating at 240 V AC.
- Rated auxiliary-circuit voltage of 690 V AC and 440 V DC.
- Standard screw-terminal connections.
- IP20 terminal protection.
Efficient Direct Control from PLC Outputs
A mini contactor relay uses an electromagnetic coil to change the state of its auxiliary contacts. The low-power coil in the ABB MCRI022ATD allows a compatible 24 V DC PLC output to operate the relay directly, helping reduce the need for intermediate coupling components.
The combination of normally open and normally closed contacts supports signal distribution, interlocking and control-sequence functions. Compact dimensions and flexible mounting make the relay suitable for densely populated control panels and machine-control assemblies.
Typical Applications
- Direct switching from compatible PLC outputs.
- Industrial machinery control circuits.
- Electrical-panel relay logic and interlocking.
- Automation and process-control systems.
- Building-control and HVAC equipment.
- OEM machinery and compact control assemblies.
