Launch of Sample Provision for High Voltage AC Relay “BX1” with 3,000VAC and NACS compatibility
EM Devices Corporation (President: Takeharu Aoki; Headquarters: Shiroishi City, Miyagi Prefecture) has developed the high voltage AC relay “BX1”, targeting NACS-compatible vehicle chargers and other related applications. We began offering samples in April 2026.
製品の概要
High-voltage,
high-capacity AC relay
“BX1”
Product Name BX1 Dimensions 25.0×20.0x28.5mm Contact Type /
Weight 1a (19gram) /
1c (25gram) Contact Rating 60A 277VAC Coil Rated Voltage
/Power Consumption 12VDC/3.0W Ambient Temperature: -40℃～+105℃ Dielectric Strength
(Between Open Contacts) 3,000VAC,50/60Hz 1min Dielectric Strength
(Between Coil and Contacts) 4,000VAC,50/60Hz 1min Sample Availability April, 2026
Many major automotive manufacturers have already announced their plans to adopt NACS, the fast-charging standard for electric vehicles developed by Tesla.
In addition, there has recently been growing demand for shorter charging times even for normal charging using AC power, and as a result, development is underway to increase the output of on-board chargers (hereinafter referred to as OBCs).
In response, we have developed the “BX1,” a high-voltage, high-capacity on-board AC relay with a voltage rating of 3,000V (open-circuit) and a rated current of 60A, and began providing samples in April 2026. The “BX1” is the world’s smallest in its class(*1) and contributes to the miniaturization of OBCs.
In the rapidly evolving EV market, EM Devices will continue to quickly capture the latest trends and develop products that meet customer needs.
(*1) Based on our research as of April 2026.
Product Datasheet and 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: Takeharu Aoki; Headquarters: Shiroishi City, Miyagi Prefecture) has developed the high voltage AC relay “BX1”, targeting NACS-compatible vehicle chargers and other related applications. We began offering samples in April 2026.
製品の概要
High-voltage,
high-capacity AC relay
“BX1”
| Product Name | BX1 |
|---|---|
| Dimensions | 25.0×20.0x28.5mm |
| Contact Type / Weight | 1a (19gram) / 1c (25gram) |
| Contact Rating | 60A 277VAC |
| Coil Rated Voltage /Power Consumption | 12VDC/3.0W |
| Ambient Temperature: | -40℃～+105℃ |
| Dielectric Strength (Between Open Contacts) | 3,000VAC,50/60Hz 1min |
| Dielectric Strength (Between Coil and Contacts) | 4,000VAC,50/60Hz 1min |
| Sample Availability | April, 2026 |
Many major automotive manufacturers have already announced their plans to adopt NACS, the fast-charging standard for electric vehicles developed by Tesla.
In addition, there has recently been growing demand for shorter charging times even for normal charging using AC power, and as a result, development is underway to increase the output of on-board chargers (hereinafter referred to as OBCs).
In response, we have developed the “BX1,” a high-voltage, high-capacity on-board AC relay with a voltage rating of 3,000V (open-circuit) and a rated current of 60A, and began providing samples in April 2026. The “BX1” is the world’s smallest in its class(*1) and contributes to the miniaturization of OBCs.
In the rapidly evolving EV market, EM Devices will continue to quickly capture the latest trends and develop products that meet customer needs.
(*1) Based on our research as of April 2026.
Product Datasheet and 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.