Miniature Power Relay Products



As a high capacity power relay supplier, ISTEK also provides miniature power relay products. These slim sized miniature energy relays are designed and made to meet various customer needs from industrial machineries to household appliances.

Depending on the final requirements, there are two types of miniature power relay for ISTEK's international customers to choose:

  • Bistable miniature power latching relay
  • Monostable miniature PCB type relay

All of the miniature latching relays are highly sensitive and very suitable for use as signal relay. Based on clients' requirements, they can be made with either one or two coils. Same as other latching relay products, they are pulse driven and consume little energy by itself.

Typically, our customers use this type miniature relay on switch boards, telephones, industrial machines and audio equipment, etc.

Our monostable miniature PCB relay has very slim size but very impressive isolation endurance performance. With nominal surge voltage (between coil and contact) of 10KV rms, the actual breakdown voltage tested/confirmed by client is over 12KV.

Besides energy meter especially smart meter, this PCB mounting miniature monostable relay is also used by our clients on hot water unit, refrigerator, microwave and air conditioner, etc.




Bistable miniature power relay (ISTEK Series)

1). ISTEK-MR109-1A 125Va (or 2A 30Vdc)

  • Maximum Switching Current: 2A
  • Contact Resistance: 50mΩ Max.
  • Contact Form: DPDT 2C
  • Insulation Resistance: 100MΩ Min. (500Vdc)
  • Dielectric Strength: between contacts - 1,000Vac (50/60Hz 1min); between contact and coil - 1,500Vac (50/60Hz 1min)
  • Operation Endurance: Mechanical-1,000,000 OPS; Electrical-300,000 OPS
  • Coil: can be chosen as single or double coil; coil voltage choices: 3Vdc, 5Vdc, 6Vdc, 9Vdc, 12Vdc, 24Vdc and 48Vdc
  • Ambient Temperature: -40 - +70
  • Dimensions: 20 x 10 x 10
  • Applications: double pole bistable polarized relay can be used Industrial Machines, Telephone, Audio Equipment and Switch Board, etc.
2A 30Vdc - miniature power latching relay

ISTEK-MR109-2A 30Vdc (or 1A 125Vac): Want to find out the price of this miniature latching relay now? Please contact us for more technical details of this miniature relay. Please refer to the product datasheet: Miniature-Bistable-Relay-ISTEK-R109-1A


2). ISTEK-MR112-5A 250Vac 

  • Maximum Switching Current: 5A
  • Contact Resistance: 100mΩ Max.
  • Contact Form: 2C
  • Insulation Resistance: 100MΩ Min. (500Vdc)
  • Dielectric Strength: between contacts - 750Vac (50/60Hz 1min); between contact and coil - 4,000Vac (50/60Hz 1min)
  • Operation Endurance: Mechanical - 1,000,000 OPS; Electrical - 50,000 OPS
  • Ambient Temperature: -40 - +70
  • Dimensions: 24 x 17 x 13
  • Applications: Smart Home Equipment, PCB Mounting, Electrical Remote Control, etc.

3). ISTEK-MR112-10A 250Vac 

  • Maximum Switching Current: 10A
  • Contact Resistance: 100mΩ Max.
  • Contact Form: 2C
  • Insulation Resistance: 100MΩ Min. (500Vdc)
  • Dielectric Strength: between contacts - 750Vac (50/60Hz 1min); between contact and coil - 4,000Vac (50/60Hz 1min)
  • Operation Endurance: Mechanical - 1,000,000 OPS; Electrical - 50,000 OPS
  • Ambient Temperature: -40 - +70
  • Dimensions: 24 x 17 x 13
  • Applications: Smart Home Equipment, PCB Mounting, Electrical Remote Control, etc.

5A / 10A 250Vac bistable miniture power latching relay

ISTEK-MR112-10A 250Vac (or 5A 250Vac): Want to find out the price of this miniature latching relay now? Please contact us.



Monostable miniature power relay - PCB type


ISTEK-MR110-3A 250Vac (3A 30Vdc)

  • Maximum Switching Current: 5A
  • Contact Resistance: 100mΩ Max.
  • Contact Form: SPST 1A
  • Insulation Resistance: 1,000MΩ Min. (500Vdc)
  • Dielectric Strength: between contacts - 750Vac (50/60Hz 1min); between contact and coil - 4,000Vac (50/60Hz 1min)
  • Operation Life: Mechanical - 3,000,000 OPS; Electrical - 100,000 OPS
  • Surge Voltage (between coil and contact): 10KV rms ( The actual breakdown voltage tested by client: over 12KV)
  • Ambient Temperature: -40 - +70
  • Dimensions: 22 x 15 x 7
  • Special Features: this very slim monostable PCB relay has outstanding isolation properties. It has been customer tested to have very high isolation performances (over 12KV and 10J) with very competitive prices.  
  • Applications: single pole monostable relay has been adopted by energy meter manufacturers as PCB relay for smart meters. It is also used by our clients on hot water unit, refrigerator, microwave and air conditioner, etc.
Monostable miniature pcb power relay - surge voltage over 12,000V

ISTEK-MR110-3A 250Vac (or 5A 30Vdc): Want to find out the price of this monostable miniature power relay now? Please contact us.

For more technical details of this PCB relay, please refer to its datasheet: Miniature-Monostable-Relay-ISTEK-R110-3A 


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