ABB Phase, Voltage Monitoring Relay, 3 Phase, DPDT, 180 → 280V ac, DIN Rail

RS Stock No.:: 775-7918
Mfr. Part No.:: 1SVR730885R3300 CM-MPS.21S
Brand:: ABB

ABB Phase, Voltage Monitoring Relay, 3 Phase, DPDT, 180 → 280V ac, DIN Rail

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Subtotal (1 unit)*

£218.34

(exc. VAT)

£262.01

(inc. VAT)

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Temporarily out of stock

12 unit(s) shipping from 21 November 2025
Plus 14 unit(s) shipping from 12 December 2025

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Units	Per unit
1 - 4	£218.34
5 - 9	£207.42
10 - 24	£196.51
25 - 49	£185.59
50 +	£174.68

*price indicative

RS Stock No.:: 775-7918
Mfr. Part No.:: 1SVR730885R3300 CM-MPS.21S
Brand:: ABB

Specifications

Technical Reference

Legislation and Compliance

Product Details

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Select all	Attribute	Value
	Brand	ABB
	Monitoring Application	Phase, Voltage
	Electrical Phase	3
	Contact Configuration	DPDT
	Voltage Sensing Range	180 → 280V ac
	Voltage Sensitivity	Overvoltage, Undervoltage
	Mounting Type	DIN Rail
	Phase Sensitivity	NEUTRAL, Phase Failure, Phase Imbalance, Phase Sequence
	Time Delay	0.1 → 30 s, 0s
	Frequency Sensing Range	45 → 65Hz
	Series	CM-MPS
	Maximum Voltage Sensed	280V ac
	Height	85.6mm
	Width	22.5mm
	Maximum Operating Temperature	+60°C
	Minimum Operating Temperature	-25°C
	Dimensions	103.7 x 22.5 x 85.6mm
	Minimum Voltage Sensed	180V ac
	Length	103.7mm
	Operating Temperature Range	-25 → +60°C
	Terminal Type	Screw
	Standards Met	UL

	Select all
	Brand ABB
	Monitoring Application Phase, Voltage
	Electrical Phase 3
	Contact Configuration DPDT
	Voltage Sensing Range 180 → 280V ac
	Voltage Sensitivity Overvoltage, Undervoltage
	Mounting Type DIN Rail
	Phase Sensitivity NEUTRAL, Phase Failure, Phase Imbalance, Phase Sequence
	Time Delay 0.1 → 30 s, 0s
	Frequency Sensing Range 45 → 65Hz
	Series CM-MPS
	Maximum Voltage Sensed 280V ac
	Height 85.6mm
	Width 22.5mm
	Maximum Operating Temperature +60°C
	Minimum Operating Temperature -25°C
	Dimensions 103.7 x 22.5 x 85.6mm
	Minimum Voltage Sensed 180V ac
	Length 103.7mm
	Operating Temperature Range -25 → +60°C
	Terminal Type Screw
	Standards Met UL

COO (Country of Origin):: DE

ABB CM-MPS Series Monitoring Relay, DPDT Contact Configuration, 180 to 280V AC Voltage Sensing Range - 1SVR730885R3300 CM-MPS.21S

This monitoring relay is a multifunctional device from the CM-MPS series, designed for effective monitoring in three-phase applications. With dimensions of 103.7 x 22.5 x 85.6mm, it operates within a voltage sensing range of 180-280 V AC and can handle electrical phases of up to three. The relay provides essential protection against voltage fluctuations and phase-related issues, ensuring system reliability.

Features & Benefits

• Monitors overvoltage and undervoltage conditions
• Detects phase imbalance and phase failure
• Adjustable tripping delay between 0 and 30 seconds
• Utilises DPDT contact configuration for versatile applications
• Suitable for mounting on standard DIN rails
• Wide operating temperature range from -25 to +60°C

Applications

• Used in industrial automation systems
• Suitable for three-phase electrical supply monitoring
• Employed in settings requiring phase sequence verification
• Ideal for needing neutral interruption detection

How does the adjustable tripping delay enhance reliability in operations?

The adjustable tripping delay allows custom configuration between instantaneous and 30 seconds, enabling users to optimise the response time to faults without unnecessary interruptions. This ensures a fine balance between prompt action and avoiding nuisance tripping during transient conditions.

What are the key advantages of utilising a DPDT configuration?

The DPDT configuration offers flexibility by allowing two separate circuits to be managed simultaneously, providing enhanced control over monitoring and switching operations in various applications. This is particularly beneficial in complex systems where multiple conditions need to be monitored at once.

In which scenarios should the voltage sensitivity features be applied?

These voltage sensitivity features are crucial in environments prone to fluctuations, ensuring that equipment operates only within safe voltage limits. By monitoring both over and undervoltage events, it protects machinery from damage and enhances operational safety.