CM-MPS.21S 1SVR730885R3300 Three-phase Monitoring Relay, China CM-MPS.21S 1SVR730885R3300 Three-phase Monitoring Relay Manufacturers, Suppliers, Factory

Overview

Place of Origin:	Sweden
Brand Name:	ABB
Model Number:	CM-MPS.21S 1SVR730885R3300
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Parameter	Value
Model	CM-MPS.21S 1SVR730885R3300
Type	Three-phase Monitoring Relay
Functions	Over/undervoltage, phase failure, phase unbalance, phase sequence, interrupted neutral monitoring
Measuring Range (L-N)	180 – 280 V AC
Time Range	Tripping delay 0 s (ON/OFF)
Rated Supply Voltage (Us)	180 – 280 V AC (L-N)
Rated Frequency	50/60 Hz
Output	2 C/O contacts
Terminal Type	Screw terminals
Rated Operational Current AC-12 (230 V)	4 A
Rated Operational Current AC-15 (230 V)	3 A
Rated Operational Current DC-12 (24 V)	4 A
Rated Operational Current DC-13 (24 V)	2 A
Minimum Switching Capacity	24 V, 10 mA
Rated Impulse Withstand Voltage	Input: 6 kV, Output: 4 kV
Rated Insulation Voltage	Input/Output: 600 V; Output1/Output2: 300 V
Degree of Protection	Housing IP50, Terminals IP20
Overvoltage Category	III
Pollution Degree	3
Short-Circuit Protection	Fuses: NC 6 A, NO 10 A
Electrical Durability	AC-12: 100,000 cycles
Mechanical Durability	30,000,000 cycles
Connecting Capacity	Flexible: 0.5–2.5 mm²; Rigid: 0.5–4 mm² (various combinations)
Tightening Torque	0.6 – 0.8 N·m
Wire Stripping Length	8 mm
Recommended Screwdriver	4.5 / 0.8 x 4 / Pozidriv 1
Mounting Position	1 – 6
DIN Rail Mounting	TH35-7.5 / TH35-15 (IEC 60715)
Standards	CAN/CSA C22.2 No.14, IEC/EN 63000, IEC/EN 60255-27, IEC/EN 61000-6-2, IEC/EN 61000-6-3, UL 508
Dimensions (W x H x D)	22.5 x 85.6 x 103.7 mm
Weight	0.146 kg
Max Operating Voltage UL/CSA	300 V AC (output circuit)
Contact Rating UL/CSA	B300
Connecting Capacity UL/CSA	Flexible 18–14 AWG; Rigid 20–12 AWG
Tightening Torque UL/CSA	7.08 in·lb
Pilot Duty UL/CSA	B300
Flammability	UL94 V-0
Ambient Temperature	Operation -25 °C to +60 °C; Storage -40 °C to +85 °C
Max Operating Altitude	2000 m (without derating)

Description

The CM-MPS.21S 1SVR730885R3300 is a multifunctional relay from the CM three-phase monitors range. It operates with a rated control supply voltage / three-phase measuring voltage of 180-280 V AC 50/60 Hz and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. This relay is also suitable to monitor single-phase mains. It monitors all phase parameters such as over/undervoltage, phase unbalance, phase failure as well as an interrupted neutral. The corresponding threshold values are adjustable. Phase sequence monitoring as well as an ON or OFF tripping delay are selectable. The tripping delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers screw connection technology with double-chamber cage connection terminals.

Applications

Elevator manufacturers: Monitor power phase sequence to prevent elevator motor reversal and related safety accidents.

Food processing plants: Protect mixer and conveyor belt motors from burnout due to unstable voltage.

Pumping stations/water treatment plants: Monitor deep well pump motors for phase loss to prevent idling or overload.

HVAC plants: Ensure large compressors operate within normal voltage ranges.

Textile mills: Utilize self-locking terminals to ensure long-term reliable electrical connections in high-humidity environments.

Competitive Advantage

S-Range Connection: Compared to screw terminals, installation efficiency is improved by 50% and it is more reliable in vibration environments.

True RMS Measurement: Accurate monitoring is possible even in non-sinusoidal (containing harmonics) power grid environments.

Multi-functional Integration: One module integrates five monitoring functions, significantly saving rail space and procurement costs.

Transparent Protective Cover: The panel is equipped with a sealable transparent cover to prevent unauthorized personnel from arbitrarily altering settings.

FAQ

Q: What is "Easy Connect" technology in the CM-MPS.21S 1SVR730885R3300?
A: It's ABB's plug-in wiring technology. No screwdriver is needed; simply insert the wire and lock it in place. It's ideal for factory environments with frequent vibrations.

Q: Can the CM-MPS.21S 1SVR730885R3300 monitor 380V or 480V systems?
A: No. This model (.21S) is rated for 180–280V. For 380–480V systems, please select CM-MPS.41S.

Q: Why is the CM-MPS.21S 1SVR730885R3300 relay still reporting an error even though the phase sequence is correct?
A: Please check the "Asymmetry" setting. If the three-phase voltage difference exceeds the set percentage, the relay will also trip.

Q: Can the CM-MPS.21S 1SVR730885R3300 operate without a neutral wire?
A: Yes, it is designed for three-phase three-wire systems and does not require a neutral wire.

Q: What is the purpose of setting the delay time on the CM-MPS.21S 1SVR730885R3300?
A: It filters out instantaneous voltage fluctuations (surges) in the power grid, preventing frequent false tripping of the relay.