The EHDB520C-1L is a 3-pole contactor rated for 520 A, with a 120 VAC coil, configured as 2 normally-open and 1 normally-closed main poles, plus 1 NO and 1 NC auxiliary contact block. It is specifically designated as a DC drive dynamic braking contactor — meaning it is built to handle the inrush and interruption of DC current in the braking circuit of a variable-speed drive, not just a general-purpose motor switching contactor. The coil is 120 VAC, so verify your control transformer or panel supply matches that voltage class. The auxiliary contacts (1 NO + 1 NC) are already integrated, saving a separate add-on block for basic feedback or interlock wiring.
EHDB520C-1L Contactor, 520 A, 120 VAC Coil, DC Drive Dynamic
MPNEHDB520C-1L
EHDB520C-1L, 3-pole electrical contactor, 520 A, 120 VAC coil, 2 NO + 1 NC main poles plus 1 NO + 1 NC auxiliary contacts, DC drive dynamic braking application.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Weight | 14.06 kgs |
Product details
Frequently asked questions
Will EHDB520C-1L drop into a panel that was specified around A185-30 without rewiring?
No — the A185-30 is a 185 A general-purpose contactor weighing 3.18 kg, while the EHDB520C-1L is a 520 A dynamic braking contactor at 14.06 kg. The footprint, mounting hole pattern, and lug sizes are completely different; a panel designed for the A185-30 cannot accommodate this contactor without major rework.
MPN
EHDB520C-1L