NS44E-25_ABB_PRODUCT_吉林易择科技技术发展有限公司

Parameter Specification Product Line / Series System E (S200 S-series) Device Type Miniature Circuit Breaker (MCB) Poles 4P (Four Poles – L1, L2, L3, N - all protected) Rated Current (Iₙ) 25 A (per pole) Rated Voltage (Uₙ) 400 V AC (3P+N) Rated Frequency 50/60 Hz Breaking Capacity (Icn) 6 kA (at 230/400V AC) Tripping Characteristic C Curve (Instantaneous trip between 5x and 10x Iₙ). Suitable for applications with moderate inrush currents typical in three-phase installations. Mechanical Endurance ≥ 20,000 operations Electrical Endurance ≥ 10,000 operations (at Iₙ) Mounting 35 mm symmetrical DIN rail (EN 60715) Width 72 mm (4 standard modules, each 18mm) Terminal Torque 2.0 - 2.5 Nm (for rated cross-section conductors) Connection Capacity Rigid Cable: 1x 25 mm² / 2x 16 mm² (per pole) Flexible Cable: 1x 16 mm² (with ferrule) / 1x 25 mm² (with ferrule) (per pole) Standards Compliance IEC/EN 60898-1, IEC/EN 60947-2 Ambient Temperature (Operation) -25°C to +55°C Storage Temperature -40°C to +70°C

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DESCRIBE

The ABB NS44E-25 is a 25-ampere, 4-pole miniature circuit breaker (MCB) from the System E (S200 S-series) product line.This device is a compact MCB designed to provide simultaneous overload and short-circuit protection for all four conductors of a three-phase circuit (three phases and the neutral). It acts as an automatic switch that trips (disconnects) all poles when a fault is detected on any single pole, ensuring complete isolation of the load.

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