MMII-PD-1-2-120 | Motor Protection Relay

Product Model：GE MMII-PD-1-2-120
​Manufacturer：GE Industrial Solutions
​Product Type：Motor Protection Relay
​Voltage Rating：120V AC/DC (control circuit)
​Current Range：1–12 A (adjustable via dial)
​Protection Features：Overload, phase loss, imbalance, locked rotor
​Contact Rating：8 A @ 250V AC (relay output)
​Mounting：DIN-rail (35 mm)
​Operating Temp：-30°C to +70°C
​Certifications：UL 508, CE, RoHS
​Dimensions：90 mm x 45 mm x 70 mm
​Weight：0.3 kg

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Description

Product Overview
The ​GE MMII-PD-1-2-120 is a motor protection relay designed for safeguarding industrial motors against electrical faults such as overloads, phase loss, and imbalances. Part of GE’s Multilin™ MMII series, this device combines advanced motor diagnostics with robust protection features, ensuring reliable operation in demanding environments like manufacturing plants, HVAC systems, and water treatment facilities. The ​MMII-PD-1-2-120 is engineered for 120V AC/DC control circuits and supports single or dual-phase monitoring, making it ideal for small to medium-sized motors.

With its compact design and DIN-rail mounting, the ​MMII-PD-1-2-120 integrates seamlessly into motor control centers (MCCs) or standalone panels. Its user-friendly interface includes LED status indicators and a dial for adjustable trip settings, simplifying setup and maintenance. The relay’s solid-state construction ensures durability in harsh conditions, including temperature extremes (-30°C to +70°C) and high-vibration applications.

Technical Specifications

Parameter Name Parameter Value
​Product Model GE MMII-PD-1-2-120
​Manufacturer GE Industrial Solutions
​Product Type Motor Protection Relay
​Voltage Rating 120V AC/DC (control circuit)
​Current Range 1–12 A (adjustable via dial)
​Protection Features Overload, phase loss, imbalance, locked rotor
​Contact Rating 8 A @ 250V AC (relay output)
​Mounting DIN-rail (35 mm)
​Operating Temp -30°C to +70°C
​Certifications UL 508, CE, RoHS
​Dimensions 90 mm x 45 mm x 70 mm
​Weight 0.3 kg

MMII-PD-1-2-120.

Key Functional Features

  • ​Adjustable Trip Settings: Dial-based configuration for overload and time-delay settings.
  • ​Diagnostic LEDs: Visual indicators for power, trip status, and fault conditions.
  • ​Manual/Auto Reset: Selectable reset mode for post-trip recovery.
  • ​Compact Design: Space-efficient for crowded control panels.
  • ​Solid-State Reliability: No moving parts, ensuring long-term durability.

Application Scenarios

  • ​Industrial Motors: Protects pumps, compressors, and conveyors from electrical faults.
  • ​HVAC Systems: Safeguards blower and fan motors in commercial buildings.
  • ​Water Treatment: Monitors motors driving mixers and aerators.
  • ​Material Handling: Prevents motor burnout in elevators and hoists.
  • ​Agriculture: Ensures reliability in irrigation pump controls.

Related Products

  1. ​GE MMIII-PD-1-2-240: Higher voltage variant (240V) for larger motors.
  2. ​GE Multilin 369: Advanced motor management relay with communication.
  3. ​GE CR194 Load Center: DIN-rail enclosure for relay integration.
  4. ​GE AFCI Circuit Breakers: Complementary arc-fault protection.
  5. ​GE QuickConnect Cables: Pre-wired harnesses for simplified installation.

Product Assurance
GE guarantees the ​MMII-PD-1-2-120 with a ​5-year warranty, supported by ISO 9001-certified manufacturing. Each unit undergoes dielectric testing (1500V AC) and thermal cycling to ensure compliance with UL 508. Global customers receive technical support via GE’s Industrial Solutions Network, including troubleshooting guides and on-site service for critical failures.

Note: Specifications are based on typical MMII series models. Confirm exact parameters with GE’s official documentation due to potential model variations.

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