ABB CM-MPS.41 (1SVR630884R3300) 3-phase monitoring relay for 300–500V AC: phase failure, sequence, over/undervoltage, unbalance protection, DIN-rail mount.

Product Overview

ABB 1SVR630884R3300 (CM-MPS.41) is a multifunctional three-phase monitoring relay from ABB’s CM series. It supervises three-phase power systems (300–500 V AC) to protect motors, generators, and critical equipment against phase loss, incorrect sequence, overvoltage, undervoltage, and phase unbalance.

Key Specifications

• Brand: ABB
• Order Code: 1SVR630884R3300
• Type: CM-MPS.41 (Three-phase monitoring relay)
• Supply/Measuring Voltage: 3 × 300–500 V AC (L1-L2-L3), 50/60 Hz
• Monitoring Functions:
• Phase failure (loss) detection
• Phase sequence monitoring
• Overvoltage (420–500 V AC) & Undervoltage (300–380 V AC)
• Phase unbalance detection
• Output: 2 × c/o (DPDT/SPDT) relay contacts
• Contact Rating: 250 V AC / 4 A
• Time Delay: 0.1–30 s adjustable (ON/OFF delay); 200 ms startup delayABB Group
• Terminals: Screw terminals
• Dimensions: 22.5 × 85.6 × 103.7 mm (W×H×D)
• Weight: ~0.13 kgABB Group
• Mounting: DIN rail (35 mm)
• Operating Temp.: -25°C to +60°C
• Protection: IP50 (housing), IP20 (terminals)
• Certifications: CE, UL, CCC, RoHS
• Condition: New / Refurbished

• Warranty: 12 Months

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Core Features

• Multifunctional Protection: All-in-one phase/voltage supervision for 3-phase supplies.
• Adjustable Thresholds: Voltage limits & unbalance thresholds configurable via dials.
• Flexible Timing: 0.1–30 s trip delay; selectable ON/OFF delay modeABB Group.
• LED Diagnostics: Front LEDs for power, status, and fault indication.
• High Isolation: 6 kV impulse withstand voltage (input); 4 kV (output).
• Compact Design: 22.5 mm wide, fits standard DIN rails.

• Easy Wiring: Screw terminals for secure field wiring.

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Typical Applications

• Motor control centers (MCC) & pump panels

• HVAC, compressors, conveyor systems

• Generator sets & UPS systems

• Industrial control panels (3-phase power protection)

• Water treatment, manufacturing, food & beverage

• Retrofit for older phase monitoring relays

  
  

Why ABB CM-MPS.41?

• Proven reliability in industrial 3-phase applications

• No auxiliary power needed (self-powered from measured phases)

• Wide voltage range (300–500 V AC) covers global 400 V grids

• UL/CE/CCC certified for global installation

• Long service life (maintenance-free)

  
  

About Us

Guizhou Yuanmiao Automation Equipment Co., Ltd. is a professional supplier of industrial automation spare parts and international trade services.

We supply genuine DCS systems, PLC modules, servo drives, robot parts and other control components, covering top brands including ABB, Siemens, Woodward, Bently, GE and more.

We offer competitive prices, fast global delivery, strict quality control and professional after-sales support, providing cost-effective solutions for customers worldwide.

Our products are widely used in power, oil & gas, metallurgy, marine, manufacturing and other industries. We are committed to being your trusted one-stop partner for industrial automation spare parts.