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The ABB OFAFC000GG10 is a current sensing, electronic overload relay from ABB's OFAF series, a member of the System Pro M compact® product line. It is designed to provide precise thermal overload protection, phase loss detection, and motor current monitoring for three-phase AC induction motors. This specific model features a compact design and is intended for use in conjunction with a contactor (as a stand-alone overload block) to form a complete motor starter.
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Parameters Category Parameter Specification for OFAFC000GG10 General Type Electronic, Adjustable, 3-Phase Overload Relay Series OFAF Series (System Pro M compact®) Trip Class Class 10 (as per IEC/EN 60947-4-1) Maximum Setting Current (Iₓ) 10 A (Adjustable range, e.g., 0.4 - 10 A) Protection Functions Overload Protection Electronic thermal replica with ambient compensation. Phase Loss Sensitivity Yes. Trips within approx. 5-10 seconds at 100% FLC. Asymmetry / Unbalance Detects significant phase unbalance. Locked Rotor Protection Inherent via fast trip on high starting current (typically 6-8 x Iₓ). Settings & Controls Current Setting Rotary dial, continuously adjustable within range. Reset Mode Manual (push-button) or Automatic (selectable via a slide switch). Test Function Integrated TEST button. Trip Indicator Mechanical flag (red) or LED. Electrical Characteristics Rated Operational Voltage (Uₑ) Up to 690 V AC, 50/60 Hz (for main circuit isolation). Control Circuit Voltage Limited by auxiliary contacts; typically ≤ 600 V AC/DC. Power Consumption Negligible (self-powered from current sensors). Auxiliary Contacts Trip Contact (95-96) 1 NO (Normally Closed) – Breaks contactor coil circuit. Alarm/Signal Contact (97-98) 1 NO (Normally Open) – Makes on trip for remote indication. Contact Rating Typically AC-15: 6 A at 230 V; DC-13: 0.3 A at 230 V. Current Sensors Type Integrated Current Transformers (CTs). Continuous Withstand 1.2 x Iₓ (Max Setting) continuously. Mounting & Connection Mounting 35 mm top-hat DIN rail (EN 60715). Main Terminals Screw clamp for motor/load connection. Accepts 1.5 - 4 mm² cable. Auxiliary Terminals Screw clamp for control wiring. Accepts 0.5 - 2.5 mm² cable. Environmental Operating Temperature -25°C to +60°C (calibrated at +40°C) Storage Temperature -40°C to +70°C Altitude Up to 2000 m without derating Pollution Degree PD 2 Protection Degree IP20 Physical Dimensions (W×H×D) Approx. 45 x 90 x 70 mm (varies by model) Weight Approx. 0.2 kg Standards Compliance IEC/EN 60947-4-1, UL 508, CSA C22.2 No. 14
