1SDA073718R1 ABB M E1.2 220-250 VAC/DC + MC 24V Motor Operator

Why Choose the ABB M E1.2 220-250 VAC/DC + MC 24V Motor Operator?

The ABB M E1.2 220-250 VAC/DC + MC 24V, order code 1SDA073718R1, is a geared motor operator and automatic spring-charging accessory designed for ABB SACE Emax 2 E1.2 air circuit breakers. Powered from a 220–250 V AC/DC control supply, it automatically charges the breaker operating mechanism springs and supports electrically controlled operation in industrial power-distribution systems.

Part of the ABB SACE Emax 2 electrical accessory range, the motor operator enables circuit breakers to be operated remotely by electrical controls while retaining local operation from the breaker front. When the operating mechanism springs are discharged and the motor is energised, the device automatically recharges them so that the breaker is prepared for the next closing operation.

This version also incorporates MC 24 V DC spring-charged electrical indication, providing a dedicated signalling function for supervision of the charged state of the operating mechanism. If auxiliary power is unavailable, the Emax 2 mechanism can still be charged manually using its dedicated charging lever, helping maintain operational flexibility during commissioning, maintenance and power-loss conditions.

Key Advantages

• Genuine ABB SACE Emax 2 motor operator for E1.2 air circuit breakers.
• 220–250 V AC/DC motor supply suitable for common industrial control systems.
• Automatically recharges the breaker operating springs after they are discharged.
• Supports electrically controlled and remote circuit-breaker operation.
• Includes MC 24 V DC spring-charged electrical indication.
• Retains the ability to charge the breaker mechanism manually if electrical power is unavailable.

Key Features

• ABB M geared motor operator.
• Designed specifically for SACE Emax 2 E1.2 circuit breakers.
• 220–250 V AC/DC rated control supply for the motor operator.
• 24 V DC MC spring-charged indication.
• Automatic charging of the circuit-breaker closing springs.
• Supports remote electrical operation of the breaker mechanism.
• Manual spring charging remains available through the breaker operating mechanism.
• AC/DC actuating voltage type.
• ABB order code 1SDA073718R1.

Reliable Motorised Spring Charging for Emax 2

Stored-energy air circuit breakers use charged operating springs to provide the mechanical energy required for rapid and dependable closing. The ABB M motor operator automates the spring-charging process: after the mechanism has discharged and while the motor is energised, the operator recharges the springs so that the circuit breaker is prepared for a subsequent closing command.

Automated spring charging is particularly valuable in remotely operated switchboards and power-management systems where circuit breakers must be ready for electrical operation without routine manual intervention. The additional 24 V DC MC indication provides electrical feedback of the spring-charged condition, supporting integration with control, signalling and supervisory systems.

Typical Applications

• Motorised ABB SACE Emax 2 E1.2 air circuit breakers.
• Industrial low-voltage power-distribution switchboards.
• Remote circuit-breaker control systems.
• Automatic transfer and power-management installations.
• Generator and critical-power distribution panels.
• Automated industrial and infrastructure switchgear.