ABB Protecta Plus ESB25-40N-01 24V AC/DC Installation Contactor • 25 A Rated Current • 4 NO 4-Pole Modular Contactor • DIN Rail Mount 36 mm Width • 1SAE231111M0140

• TECHNICAL SPECIFICATIONS – 4-pole installation contactor (4 NO), rated current 25 A (AC-1 / AC-7a), AC-3 current 9 A at 230 V single-phase and 400 V three-phase, control voltage 24 V AC/DC, insulation voltage 500 V, impulse withstand 6 kV, DIN rail mounting, screw terminals, IP20, 36 × 85 × 65 mm.
• VERSATILE LOAD CONTROL – ABB hum-free installation contactors are available from 16 to 100 A with a wide range of main contact configurations, including NO, NC and mixed combinations. Designed for switching lighting, heating, ventilation systems, motors and pumps in residential, commercial and industrial installations.
• QUIET AC/DC OPERATION – Innovative AC/DC coil design prevents device humming and enables operation with AC or DC control voltages depending on the coil variant. The design supports quiet switching performance, making the contactors suitable for noise-sensitive environments such as hotels, offices and residential buildings.
• FLEXIBLE SYSTEM INTEGRATION – Part of the ABB installation contactor portfolio with a broad range of accessories including auxiliary contacts and protective covers. Devices allow side-by-side mounting without spacing and integrate seamlessly into ABB modular installation systems for distribution boards.
• ABB PROTECTA PLUS SYSTEM – Part of the ABB Protecta Plus modular distribution system for indoor installations, offering high internal accessibility, removable internal modules for simplified wiring, insulated neutral and earth bars, and an expandable cabinet concept for flexible electrical distribution solutions.

The ABB Protecta Plus ESB25-40N-01 installation contactor is designed for reliable switching and control of electrical loads up to 25 A in modular electrical distribution systems. With four normally open contacts (4 NO), it is suitable for switching lighting systems, electric heating, pumps, ventilation systems and other electrical loads in residential, commercial and light industrial applications. The compact 36 mm modular housing allows quick and space-saving installation on standard DIN rails in distribution boards. The 24 V AC/DC control coil supports efficient switching performance with low power consumption and long operational life, making the contactor suitable for demanding control applications where dependable operation is required. Manufactured according to IEC/EN 60947-1, IEC/EN 60947-4-1 and IEC/EN 61095 standards, the contactor features screw terminal connections, IP20 protection and a robust construction for consistent operation in modern electrical installations.