Selecting Eaton DILM Contactors from 7A to 65A: A Complete Guide
The Eaton DILM contactor range from 7A to 65A covers the most common industrial motor control applications. RF Mando supplies replacement and OEM equivalents for this complete range from its Xiamen facility. This 2026 guide explains how to choose the correct model.
1. Frame Size Concept
Eaton groups DILM contactors into frame sizes:
- B-frame — 7A to 15A, compact 45mm width
- C-frame — 18A to 32A, 45mm width with larger contacts
- D-frame — 40A to 65A, 55mm width
Each frame accepts a specific range of auxiliary contact modules and accessories. Mixing frames requires adapter kits.
2. Current Ratings Explained
The current rating refers to AC-3 duty (motor starting, switching off while running). For each rating, the contactor can handle the rated current continuously at 400V three-phase. Common ratings: 7A, 9A, 12A, 15A, 18A, 25A, 32A, 40A, 50A, 65A.
3. Coil Voltage Selection
Standard coil options include:
- AC coils: 24VAC, 110-120V, 220-240V, 380-440V, 415-480V
- DC coils: 24VDC, 48VDC, 60VDC, 110VDC, 220VDC
Verify the coil voltage matches your control circuit before ordering. RF Mando stocks all common coil voltages.
4. Auxiliary Contacts
Each contactor ships with either 1NO or 1NC integrated auxiliary contact. External auxiliary contact modules can add 2, 4, or more contacts. The 1NO or 1NC designation determines the default state.
5. Selection Examples
For a 5HP 400V motor (approximately 7.5A full load): choose DILM 9A or 12A. For a 25HP 400V motor (approximately 35A): choose DILM 40A. For a 40HP 400V motor (approximately 60A): choose DILM 65A. Always select one frame up from the calculated full load current for switching longevity.
6. Sourcing from RF Mando
RF Mando supplies DILM equivalents for all B-frame, C-frame, and D-frame contactors. Stock SKUs cover 7A through 65A in 5 coil voltages each. MOQ is 500 pieces per SKU. Lead time is 15 days for standard orders.