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TEF4-ON

The ABB TEF4-ON is a three-phase (3P) + neutral (N) high-sensitivity electronic residual current circuit breaker (RCCB). It belongs to ABB's TEF series, a line of compact DIN-rail mounted devices designed for protection against electric shock and fire risks.

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Technical Parameters Parameter Specification Series ABB TEF Series (Electronic RCCB) Product Type 4-Pole (3P+N) Electronic Residual Current Circuit Breaker Order Code (Base) TEF4-ON (Note: The complete order code includes the sensitivity rating, e.g., TEF4-ON/0.03 for 30mA). Number of Poles 4-Pole (3P + N) Rated Residual Operating Current (IΔn) Selectable: 0.03 A (30mA), 0.1 A (100mA), 0.3 A (300mA) (Specified in the full order code). Residual Current Type Likely Type AC (for sinusoidal AC residual currents) as standard. Other types (A, F) may be available in the series. Rated Current (In) Common frame sizes: 25A, 40A, 63A, 80A, 100A. (The "ON" may correlate with a specific current rating; the full code or label is needed). Rated Operational Voltage (Ue) 400V AC (3P+N) Rated Insulation Voltage (Ui) 500V AC Rated Short-Circuit Making & Breaking Capacity (Icm/Icn) Typically 6 kA or 10 kA (according to IEC/EN 61008/9). Trip Time at IΔn ≤ 0.3 seconds Trip Time at 5x IΔn ≤ 0.04 seconds Auxiliary Power Line-powered (electronic) – derives operating power from the monitored circuit. Test Button Yes, for periodic functional testing. Mounting DIN Rail (35mm) mounting. Terminals Screw terminals suitable for both solid and stranded conductors. Standards Compliance IEC/EN 61008-1 (Core standard for RCCBs) Ambient Temperature -25°C to +60°C (Operation)