EM Devices Corporation

Application Group

High Inductance control

These applications require current ON/OFF control.
Therefore, 1 Form A or 1 Form U type is recommended as the contact configuration.
Basically, one single relay is recommended for ON/OFF control.
Also, due to the large inductance value of the load, it is recommended to use a relay contact protection circuit.

  • 【Recommendation】 Replacement of Plug-In Relay ⇒ PCB Relay

Because of the advantage of compact/lightweight, the cases of using PCB relay is gradually increasing.

*Printed Circuit board relay (PCB): A type of relay that is mounted directly on the printed circuit board

*Plugin relay: A type of relay that can be inserted and removed from the socket


  • Air conditioner clutch
  • Starter motor

Recommended Relays

Type of Relay Mounting Space
(mm  ×  mm)
Contact Form Contact Ratings Download
Nominal load capacity
製品画像 EX2 12.6 × 14.1 1c × 2 14VDC-25A Catalog Data Sheet
製品画像 EX1 8.0 × 12.6 1c 14VDC-25A Catalog Data Sheet
製品画像 EM1 12.9 × 14.9 1u 14VDC-40A Catalog Data Sheet
製品画像 EM1K 12.9 × 14.9
1u 14VDC-40A Data Sheet
製品画像 EL1 12.9 × 14.9 1c 14VDC-40A Catalog Data Sheet
製品画像 HX1 9.7 × 14.6 1c
16VDC-30A Data Sheet

Whether the relay fits or not depends on the conditions of usage.
Please use Relays after confirming the detailed conditions of relay usage.
Please don't hesitate to contact us with any further questions.