Why Choose the ABB OTM160E4CM230C 160A Motorised Changeover Switch?
The ABB OTM160E4CM230C is a robust and reliable 160 A motorised changeover switch designed for controlled switching between two electrical power supplies in industrial and commercial low-voltage distribution systems. As part of the ABB OTM motorised changeover switch series, it provides dependable I-0-II switching operation, allowing electrical loads to be transferred between two supply sources through a defined OFF position.
Featuring a 4-pole switching configuration and a 220–240 V AC motor operating voltage, the OTM160E4CM230C is suitable for applications requiring electrically operated source selection. Its open-transition switching mechanism ensures that the first supply is disconnected before the second supply is connected, helping prevent unintended paralleling of independent power sources.
The switch combines motorised operation with a direct-mounted manual operating handle, providing flexibility for remote switching and local manual operation. With a rated operational current of 160 A, a compact base-mounted construction and robust industrial switching performance, the OTM160E4CM230C is ideal for electrical distribution boards, generator changeover installations, industrial control panels and transfer switching assemblies.
Key Advantages
- Reliable 160 A motorised changeover switching for industrial and commercial electrical distribution.
- 4-pole configuration enables simultaneous switching of four conductors.
- I-0-II operating positions provide clear selection between two supplies and an OFF position.
- 220–240 V AC motor operating voltage supports integration with compatible electrical control systems.
- Open-transition operation disconnects one source before connecting the alternative supply.
- Integrated motor operator enables remote electrical changeover control.
- Direct-mounted manual handle provides an alternative operating method.
- Suitable for generator and mains supply changeover applications.
- Robust switch-disconnector construction supports dependable industrial operation.
- Base-mounted design allows installation inside switchgear and electrical distribution enclosures.
- Compatible with external controllers and automation systems for supervised source transfer.
- ABB OTM switching technology helps improve power distribution flexibility and operational reliability.
Key Features
- ABB OTM motorised changeover switch series.
- 160 A rated operational current.
- 4-pole switching arrangement.
- I-0-II changeover operating sequence.
- 220–240 V AC motor operating voltage.
- 50/60 Hz motor supply frequency.
- Open-transition, break-before-make switching.
- Integrated electrical motor operating mechanism.
- Direct-mounted black manual operating handle.
- Front-operated switching mechanism.
- Simultaneously switched fourth pole positioned on the right-hand side.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 8 kA short-time withstand current for 1 s.
- IP20 front protection rating.
- Base mounting for switchboard and enclosure installation.
- Suitable for electrical control and source selection applications.
- Manual operating handle and motorised switching capability in one assembly.
Technical Specifications
- Manufacturer: ABB
- Series: OTM Motorised Changeover Switches
- Model: OTM160E4CM230C
- ABB order code: OTM160E4CM230C
- ABB product ID: 1SCA022848R1510
- Product group: OT Change over Switches
- Product type: Motorised changeover switch
- Switching function: I-0-II
- Transition type: Open transition
- Rated operational current: 160 A
- Number of poles: 4
- Motor operating voltage: 220–240 V AC
- Motor supply frequency: 50/60 Hz
- Motor operating voltage range: 0.85–1.1 × rated motor voltage
- Rated operational current AC-21A: 160 A at 380–690 V AC
- Rated operational current AC-22A: 160 A at 380–690 V AC
- Rated operational current AC-23A: 160 A at 380–690 V AC
- Rated operational current AC-31B: 160 A at 380–415 V AC
- Rated operational current AC-33B: 160 A at 380–415 V AC
- Rated operational power AC-23A: 90 kW at 380–415 V AC
- Rated operational power AC-23A: 110 kW at 500 V AC
- Rated operational power AC-23A: 160 kW at 690 V AC
- Rated insulation voltage (Ui): 1000 V
- Rated impulse withstand voltage (Uimp): 12 kV
- Rated short-time withstand current (Icw): 8 kA for 1 s
- Conventional free-air thermal current (Ith): 160 A at 40 °C
- Conventional enclosed thermal current (Ithe): 160 A
- Motor operating time: Approximately 0.4–1.0 s for a 90° switching movement
- Operating mechanism: Motorised with manual operation facility
- Manual handle: Direct-mounted
- Handle colour: Black
- Operating direction: Front operated
- Fourth pole position: Right-hand side
- Fourth pole operation: Simultaneously switched
- Phase spacing: Standard
- Terminal arrangement: Top-in/bottom-out or bottom-in/top-out
- Power loss: 2.4 W per pole at rated operating conditions
- Protection rating: IP20 front
- Pollution degree: 3
- Mounting type: Base mounting
- Product dimensions (W × H × D): 307 × 150 × 197 mm
- Approximate net weight: 6.2 kg
- Country of origin: Finland
- GTIN / EAN: 6417019298696
- Applicable product standard: IEC 60947
Reliable Motorised Power Source Changeover for Electrical Distribution
Motorised changeover switches such as the ABB OTM160E4CM230C provide controlled electrical switching between two power sources. In a typical mains and generator installation, the switch allows the connected load to be supplied from either source while preventing both supplies from being connected simultaneously. The I-0-II switching arrangement provides three distinct positions: supply I connected, both supplies disconnected, and supply II connected.
The open-transition mechanism operates using a break-before-make sequence. During a changeover operation, the connected source is disconnected before the alternative source is engaged. This makes the OTM160E4CM230C suitable for installations where independent power supplies must remain electrically separated during transfer.
The integrated 220–240 V AC motor operator enables electrically controlled switching through a compatible external control system. For applications requiring automatic transfer, suitable external supply monitoring, control logic and associated protection equipment can be used to initiate the changeover sequence. The switch itself provides the motorised switching function rather than a complete standalone automatic transfer control system.
Its 4-pole construction allows simultaneous switching of three phase conductors and a fourth conductor where required by the electrical installation design. The direct-mounted manual handle supports local operation, while the robust base-mounted assembly is suitable for integration into low-voltage switchgear, distribution boards and industrial electrical control systems.
Typical Applications
- Mains and generator power supply changeover systems.
- Industrial automatic transfer switching assemblies with external controllers.
- Commercial building electrical distribution boards.
- Industrial switchgear and power distribution panels.
- Standby generator installations.
- Dual-source electrical supply selection.
- Manufacturing plants and production facilities.
- Industrial motor control centres and auxiliary distribution systems.
- Building services and infrastructure power distribution.
- Electrical installations requiring four-pole source switching.
- OEM switchboard manufacturing and electrical panel assembly.
- Remote-controlled low-voltage power transfer systems.
