1

G

9

K

B

G9KB

PCB Power Relays

600 VDC, 50 A High Capacity

Power Relay with Bidirectional

Switching

• A high capacity of 600 VDC, 50 A and bidirectional opening

and closing is achieved

• Ambient temperature 85°C

• Contact gap: 3.6 mm or more

• Low initial contact resistance

≤5 m

Ω

• UL 60947-4-1 and EN 61810-10-certified (required for ESS switching devices)

Ordering Information

Note. When ordering, add the rated coil voltage to the model number.

Both the coil voltage on the product and the packing will be marked as

VDC.

Ratings

 Coil

Note 1. The rated current and resistance are measured at a coil temperature of 23°C with a tolerance of ±10%.

Note 2. The operating characteristics are measured at a coil temperature of 23°C.

Note 3. The maximum permissible voltage is the maximum value of the fluctuation range for the relay coil operating power supply and was measured at an ambient

temperature of 23°C.

Note 4. Use this relay with coil voltage reduction.

*

Power consumption with Holding Voltage is approx. 575 mW (when applying Holding Voltage at 45%). Please confirm the details on page 4, under

Coil Voltage

Reduction (Holding Voltage) after Relay Operation.

** Some mounting directions are not guaranteed. Please confirm the details on page 4

Mounting Direction.

 Contacts

RoHS Compliant

Refer to the Precautions on page 4.

Terminal shape

Contact form

Enclosure rating

Model

Rated coil voltage (V)

Minimum packing unit

Standard

SPST-NO (1a)

Flux protection

G9KB-1A

12 VDC

24 VDC

36 pcs/box

Rated voltage

Rated current

(mA)

Coil resistance

(

Ω)

Must operate voltage

(V)

Must release voltage

(V)

Max. voltage

(V)

Power consumption

(mW)

% of rated voltage

12 VDC

Approx. 235.3

51

75% max. **

10 to 32%

110%

(at 23°C)

Approx. 2,800

Approx. 575 *

24 VDC

Approx. 116.5

206

Item

Resistive load

Contact type

Double break

Contact material

Ag Alloy (Cd free)

Rated load

600 VDC, 50 A/600 VDC, 1 A

Rated carry current

50 A

Max. switching voltage

600 VDC

Max. switching current

50 A

Application Examples

• Energy Storage System

• V2X (V2H, V2B, etc.)

• DC household appliances

Model Number Legend

1. Number of Poles

1: 1-pole

2. Contact Form

A: SPST-NO (1a)

G9KB-

12

Rated coil voltage

Example: G9KB-1A DC12