Eaton DILER-22 Auxiliary Contactor, 4-Pole, 2NO+2NC, 230V 50Hz / 240V 60Hz Coil

Panel builders and control engineers often need a compact auxiliary contactor for logic switching and interlocking tasks. The Eaton DILER-22 (part number 051777) fits into tight DIN rail spaces while delivering reliable 4-pole switching with a mixed contact configuration of 2 normally open (NO) and 2 normally closed (NC) contacts. Its coil accepts 230 V at 50 Hz or 240 V at 60 Hz, covering most industrial AC control voltages without extra transformers.

Key specifications

• Product type: Auxiliary contactor
• Series: DILER
• Contact configuration: 2 NO + 2 NC
• Number of poles: 4
• Coil voltage: 230 V AC 50 Hz / 240 V AC 60 Hz
• Rated operational current (AC-15): 4 A at 230 V, 3 A at 400 V
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Mounting: DIN rail or screw
• Terminals: Screw
• Degree of protection: IP20
• Operating temperature: -25 °C to +60 °C
• Electrical durability: > 1 million operations
• Mechanical durability: > 10 million operations
• Standards: IEC/EN 60947

Why choose it

The DILER-22 combines a compact footprint with high switching performance, offering both NO and NC contacts in a single device. This simplifies circuit design for interlocking, signaling, and auxiliary control tasks. Its dual-frequency coil rating provides flexibility across different power networks, and the screw terminals ensure secure, maintenance-free connections. With a mechanical life exceeding 10 million operations, it is built for long-term reliability in demanding environments.

Ideal use cases

• Interlocking circuits in motor control centres
• Auxiliary contact expansion for larger contactors
• Signal multiplication and isolation in PLC systems
• Control logic for conveyors, pumps, and HVAC equipment
• Safety circuits requiring positive-guided contacts (with appropriate wiring)

Good to know

The DILER-22 is part of Eaton's DILER miniature contactor range, known for its modular design and easy installation. It can be mounted on standard 35 mm DIN rail or fixed with screws. The IP20 protection means it is intended for use inside enclosures. Always verify coil voltage and contact ratings against your application before installation.