Eaton SDAINLM45 45 A 3-Pole Contactor, 230 V AC / 240 V AC Coil, Grey 278386

Industrial electricians and panel builders rely on the Eaton SDAINLM45 contactor to switch three-phase motors and resistive loads in control cabinets, machine tools, and HVAC systems. This 3-pole contactor handles 45 A under AC-3 duty at 400 V, with a coil rated for 230 V AC at 50 Hz or 240 V AC at 60 Hz, and includes one normally open and one normally closed auxiliary contact for control logic.

Key specifications

• Rated operational current (AC-3, 400 V): 45 A
• Rated operational current (AC-1, 400 V): 65 A
• Coil voltage: 230 V AC (50 Hz) / 240 V AC (60 Hz)
• Number of poles: 3 (main contacts)
• Auxiliary contacts: 1 NO + 1 NC
• Rated power (AC-3, 400 V): 22 kW
• Rated insulation voltage (Ui): 690 V
• Rated operational voltage (Ue): 690 V AC
• Rated impulse withstand voltage (Uimp): 8 kV
• Mounting: DIN rail or screw
• Terminals: screw
• Degree of protection: IP20
• Operating temperature: -25 to +60 °C
• Mechanical life: >10 million operations
• Electrical life (AC-3): >1.5 million operations
• Colour: grey

Why choose it

This contactor is built for reliable switching in industrial environments, with a robust mechanical design and a wide operating temperature range. The dual-frequency coil simplifies inventory for installations that may run on either 50 Hz or 60 Hz supplies.

Ideal use cases

• Direct-on-line starting of three-phase motors up to 22 kW
• Switching resistive heating loads
• Control of pumps, fans, and conveyors
• Integration into motor control centers and distribution boards

Good to know

The SDAINLM45 belongs to Eaton's DILM series, known for compact dimensions and easy wiring. It is suitable for use in circuits up to 690 V AC, making it versatile for various industrial power systems.