“Thanks to its contact resistance of 100 mΩ max, the component features low power dissipation,” said Rutronik. “It also provides shock resistance up to 490 m/s2 and impulse withstand up to 4,500V.”
Called G9EJH-1-P-E, it is a single-pole single-way relay, with two gaps when it is open.
It is rated for a continuous current of 15A (30A for 20s), and its 800V rating is in accordance with IEC60664.
Dielectric strength is a minimum of 2,500Vac (60s) contact-to-contact and coil-to-contact.
Insulation resistance is 1GΩ contact-to-contact and coil-to-contact.
Operate and release are both ≤30ms, and operation is over -40 to +85°C.
The 490m/s2 shock limit is with the contacts closed, while the malfunction limit with the contacts open is 98m/s2.
Vibration tolerance, before destruction or malfunction, is 10 to 55 to 10Hz, 0.75mm single amplitude (= 2.94 to 88.9m/s2).
Only one coil is available: 12V with 120Ω resistance.
This is a PCB-mount relay, and its cubic part measures 27 x 31 x 30mm.
Pre-charge relays are used where a low-impedance source such as a battery has to be switched into a large bank of un-charged capacitors by a main relay or contactor. To protect the main contacts from a huge in-rush current, the pre-charge relay closes moments before and charges the capacitor bank via a current-limiting resistor.
In this case, Rutronik expects the pre-charge relay to be used in electric vehicle chargers, energy storage systems and solar inverters.
Find the Rutronik G9JH-1-E relay page here
Durakool put two relays in one package in this 1kV 120A pre-charge device.
