Eaton SDAINLM55 3-Pole Contactor 230V 50Hz / 240V 60Hz Coil, 55A AC-3, 30kW, 1NO+1NC 278411

The Eaton SDAINLM55 contactor is built for dependable switching of three-phase motors up to 30 kW at 400 V. Its 55 A AC-3 rating and 80 A AC-1 rating make it a solid choice for industrial control panels, while the dual-frequency coil accepts both 230 V 50 Hz and 240 V 60 Hz supplies, simplifying specification across regions.

Highlights

• 3-pole main circuit with screw terminals for secure wiring
• Integrated auxiliary contacts: 1 normally open + 1 normally closed
• Rated operational voltage up to 690 V AC
• DIN rail or screw mounting for flexible installation
• Operating temperature range from -25 °C to +60 °C

In daily use

This contactor is suited for motor starting and stopping in pumps, fans, conveyors, and compressors. The auxiliary contacts provide status feedback or interlocking without additional hardware. With a mechanical durability of 1.5 million operations under AC-3 conditions, it handles frequent switching in production environments.

Full specifications

• Rated operational current (AC-3, 400 V): 55 A
• Rated operational current (AC-1, 400 V): 80 A
• Coil voltage: 230 V AC (50 Hz) / 240 V AC (60 Hz)
• Rated operational voltage: 690 V AC
• Rated power (AC-3, 400 V): 30 kW
• Auxiliary contacts: 1 NO + 1 NC
• Mounting: DIN rail / screw
• Terminal type: screw terminals
• Degree of protection: IP20
• Rated insulation voltage: 690 V
• Rated impulse withstand voltage: 8 kV
• Recommended fuse (gG/gL): 80 A
• Pollution degree: 3
• Operating temperature range: -25 to +60 °C
• Electrical life (AC-3): 1.5 x 10^6 operations

Final note

Engineered to IEC/EN 60947-4-1, the SDAINLM55 delivers consistent performance in demanding motor control applications.