Eaton Auxiliary Contactor 24 V AC 3 NO + 1 NC - Screw Terminals (DILER-31-24)

The Eaton DILER-31-24 auxiliary contactor is a compact 4-pole switching device engineered for reliable control of auxiliary circuits in industrial applications. With a 24 V AC coil and a contact configuration of 3 normally open (NO) plus 1 normally closed (NC), it provides flexible switching for interlocking, signaling, and control tasks. Screw terminals ensure secure, maintenance-free connections, while the device mounts easily on standard 35 mm DIN rail or via screw fixing.

Advantages

This contactor offers high mechanical endurance of up to 10 million operations, ensuring long service life even under frequent switching. Its compact design saves space in control panels, and the IP20 protection degree makes it suitable for installation in enclosed environments. The coil operates at 50/60 Hz, accommodating a wide range of AC supplies. Compliance with IEC/EN 60947-5-1 guarantees performance and safety.

Suitable for

• Control circuit switching in industrial machinery
• Interlocking and safety circuits
• Signaling and status indication
• Building automation systems
• HVAC control panels

Key specifications

• Coil voltage: 24 V AC, 50/60 Hz
• Contacts: 3 NO + 1 NC (4 poles)
• Connection: screw terminals
• Rated operational current (AC-15, 230 V): 4 A
• Rated operational current (AC-15, 400 V): 3 A
• Rated operational current (DC-13, 24 V): 1 A
• Rated insulation voltage: 690 V
• Rated impulse withstand voltage: 6 kV
• Mechanical life: 10 million operations
• Electrical life (AC-15): 1 million operations
• Operating temperature: -25 to +60 °C
• Mounting: DIN rail (35 mm) or screw
• Protection degree: IP20
• Standards: IEC/EN 60947-5-1

Recommendations

For optimal performance, install the DILER-31-24 in a clean, dry enclosure with adequate ventilation. Ensure coil voltage matches the control supply and verify contact ratings for the intended load. Use appropriate screwdrivers for terminal tightening to avoid damage. Combine with Eaton overload relays or other control devices for complete circuit protection.