Technical Parameters
Specification Details
Product Type Installation Contactors
Series ESB40-40N
Number of Poles 4 (Four poles)
Main Contact Configuration 4 Normally Open (4 NO)
Rated Operational Current (AC-1) 40 A
Rated Operational Voltage (Main Circuit) Up to 400 V AC / 220 V DC
Control/Coil Voltage AC/DC voltage depending on variant (e.g., 230 V AC/DC for ESB40-40N-06)
Mounting Type DIN-rail (TH35)
Rated Insulation Voltage (Ui) 500 V
Rated Impulse Withstand Voltage (Uimp) 6 kV
Rated Operational Power AC-1 Single phase ~9.2 kW at 230 V / Three phase ~27.7 kW at 400 V
Rated Operational Current AC-3 ~22 A (motor loads)
Electrical Durability AC-1 ~150000 cycles; AC-3 ~100000 cycles
Termination Type Screw terminals
Wire Stripping Length ~7 mm (control) / ~13 mm (main)
Tightening Torque ~0.9 N·m (control) / ~2.5 N·m (main)
Degree of Protection IP20
Operating Ambient Temperature −25 °C to +55 °C
Dimensions (approx.) ~54 mm (W) × 85 mm (H) × 65 mm (D)
Mechanical Durability ~1 000 000 cycles
Standards Compliance IEC/EN 60947 series
Typical Applications Lighting, heating, motor switching, pumps, HVAC control, general load switching
The ABB ESB40-40N installation contactors are compact modular contactors designed for DIN-rail mounting and are used to switch and control single-phase and three-phase electrical loads up to 40 A. They are suitable for a wide range of applications in residential, commercial, and industrial environments.