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KSER 20-56 Volt Electronic Relay

These models are used to control DC powered devices with high capacities in control and switch cabinets. They are controlled via an external potential-free contact (thermostat or hygrostat), which is connected between terminal 3 and 4. It must be ensured that the external contact is suitable to switch the required signal current without any problems. Contact Kooltronic for quantity pricing.

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Select Model Type

ModelVoltageMax. Switching CapacityOperating Temperature
KS8ER1520-56VDC15A (resistive load)-22°F to 104°F (-30°C to 40°C)
KS8ER1320-56VDC13A (resistive load)-22°F to 104°F (-30°C to 40°C)
KS8ER1120-56VDC11A (resistive load)-22°F to 140°F (-30°C to 60°C)

TECHNICAL DATA

Model Number:
Voltage:
Max. Switching Capacity:
Operating Temperature:
KS8ER1520-56VDC15A (resistive load)-22°F to 104°F (-30°C to 40°C)
KS8ER1320-56VDC13A (resistive load)-22°F to 104°F (-30°C to 40°C)
KS8ER1120-56VDC11A (resistive load)-22°F to 140°F (-30°C to 60°C)
Contact type:
Contact maker normally open (MOSFET)
Service life:
> 100,000 cycles
Operating Voltage:
DC 20 to 56 V
Control contact - Signal Current:3mA at DC 20 V / 4.5 mA at DC 24 V  - 14 mA at DC 48 V / 17 mA at DC 56 V
Connection:6-pole terminal: stranded wire¹  AGW 16 (1.5 mm²); max. AWG 12 (2.5 mm²)
Mounting:Clip for 35mm DIN rail (EN 60715)
Housing:Plastic, UL94V-0, gray (bicolor)
Dimensions:3.7 x 2.1 x 1.7 inches (93 x 53 x 44 mm)
Weight:Approx. 2.3 oz (65 g)
Mounting position:Vertical
Operating temperature:See table above
Storage temperature:-40°F to 176°F (-40°C to 80°C)
Operating/Storage humidity:max. 90% RH (non-condensing)
Protection type:IP20
Approvals:UL File No. E342261, VDE, EAC
Note:Other versions on request
¹ When connecting with stranded wires, wire end ferrules must be used. 

  • Standard Features
  • Arrangement
• High DC switching capacity
• Wide DC voltage range
• Simple Connection
• DIN rail mountable
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Electronic Relay general arrangement drawing
Dimensions, inches [mm], are for reference only and subject to change.

Dimensions, inches [mm], are for reference only and subject to change.
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Specifications are subject to change without notice. Suitability of this product for its intended use and any associated risks must be determined by the end customer/buyer in its final application.

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Wednesday, August 12, 2026  
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30 Pennington-Hopewell Road
Pennington, NJ 08534 USA
609-466-3400
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