Development of World’s Smallest “Latching” and “High Current” Relay
EM Devices Corporation (President: Chihiro Yamamoto; Headquarters: Shiroishi City, Miyagi Prefecture)
has developed the world’s smallest size 40A class latching relay “EM1KT” and 60A class power relay “EM1H” in its class to expand our lineup.
Product Overview
EM1KT Relay
Product Name
EM1KT (Latching type)
Dimensions / Weight
12.4×14.4×16.3mm / 8g
Contact form
1U
Contact rating
40A-14Vdc,
Resistive (100k cycles)
Max. carrying current
81A-1hour (20°C)
Coil rated voltage/
Power consumption
12VDC/1.8W
Ambient temperatur
-40℃～+125℃
Sample schedule
Under mass production
EM1H Relay
Product Name EM1H Dimensions / Weight 12.4×14.4×16.8mm / 8g Contact form 1U Contact rating 60A-14Vdc,
Resistive (100k cycles) Max. carrying current 81A-30min.(20°C)
75A-30min.(85°C)
70A-30min.(125°C) Coil rated voltage/
Power consumption 12VDC/0.64W Ambient temperature
-40℃～+125℃ Sample schedule June 2025
In recent years, infotainment and safety functions for automotive is increasing, and there has been a demand for smaller and higher current relays for power supply function in junction boxes or power distribution boxes.
In response to this trend, EM Devices has developed 40A class latching relay “EM1KT” and 60A class power relay “EM1H” based on the basic structure of EM1 relay series. EM1KT and EM1H are the world’s smallest product in its class (*1) and will contribute to the miniaturization of the module.
*1: Based on our research as of June 2025
Product Datasheet and Contact Information
*For the EM1H relay data sheet, please contact us via Contact Information.
Please note that the product specifications and service details mentioned in this news release are current as of the announcement date and are subject to change without notice.
EM Devices Corporation (President: Chihiro Yamamoto; Headquarters: Shiroishi City, Miyagi Prefecture)
has developed the world’s smallest size 40A class latching relay “EM1KT” and 60A class power relay “EM1H” in its class to expand our lineup.
Product Overview
EM1KT Relay
| Product Name | EM1KT (Latching type) |
|---|---|
| Dimensions / Weight | 12.4×14.4×16.3mm / 8g |
| Contact form | 1U |
| Contact rating | 40A-14Vdc, Resistive (100k cycles) |
| Max. carrying current | 81A-1hour (20°C) |
| Coil rated voltage/ Power consumption |
12VDC/1.8W |
| Ambient temperatur | -40℃～+125℃ |
| Sample schedule | Under mass production |
EM1H Relay
| Product Name | EM1H |
|---|---|
| Dimensions / Weight | 12.4×14.4×16.8mm / 8g |
| Contact form | 1U |
| Contact rating | 60A-14Vdc, Resistive (100k cycles) |
| Max. carrying current | 81A-30min.(20°C) 75A-30min.(85°C) 70A-30min.(125°C) |
| Coil rated voltage/ Power consumption | 12VDC/0.64W |
Ambient temperature | -40℃～+125℃ |
| Sample schedule | June 2025 |
In recent years, infotainment and safety functions for automotive is increasing, and there has been a demand for smaller and higher current relays for power supply function in junction boxes or power distribution boxes.
In response to this trend, EM Devices has developed 40A class latching relay “EM1KT” and 60A class power relay “EM1H” based on the basic structure of EM1 relay series. EM1KT and EM1H are the world’s smallest product in its class (*1) and will contribute to the miniaturization of the module.
*1: Based on our research as of June 2025
Product Datasheet and Contact Information
*For the EM1H relay data sheet, please contact us via Contact Information.
Please note that the product specifications and service details mentioned in this news release are current as of the announcement date and are subject to change without notice.