HFKP-012-1Z6T 12V Automotive SPDT PCB Relay 45A Wash Tight Relay

The HFKP-012-1Z6T is a heavy-duty automotive PCB relay engineered for high-current switching, exceptional durability, and dependable performance in harsh automotive environments. Designed with a Form 1C (SPDT / single pole double throw) contact configuration, this relay provides flexible switching between normally open and normally closed circuits, making it ideal for advanced automotive power control and industrial DC switching applications.

Operating with a 12VDC coil voltage and a 90 coil resistance, the relay delivers stable and efficient actuation with a coil power consumption of approximately 1.6W. Its optimized electromagnetic design ensures reliable switching performance in automotive systems where voltage fluctuations, vibration, and demanding operating conditions are common.

The HFKP-012-1Z6T supports a powerful switching capacity of 45A (Normally Open) and 30A (Normally Closed) at 14VDC, making it suitable for controlling heavy electrical loads such as radiator cooling fans, fuel pumps, air conditioning compressors, auxiliary lighting, HVAC systems, battery circuits, and other high-power automotive accessories.

Constructed with AgSnO (silver tin oxide) contact material, the relay offers excellent electrical conductivity, strong resistance to arc erosion, reduced contact wear, and long operational lifespan. This contact technology ensures consistent switching performance and reliability during repeated high-current operation.

The relay features a plastic-sealed European wash-tight construction, providing superior protection against moisture, dust, dirt, and other environmental contaminants. This sealed housing makes it especially suitable for use in harsh automotive conditions, including under-hood installations and exposed vehicle electrical compartments.

Its robust design includes 3 yoke terminals, which enhance mechanical stability, improve current handling performance, and provide stronger PCB support under high-load and vibration conditions. The compact vertical PCB mounting configuration with dimensions of 26.5 × 22 × 22.3 mm and 7-pin termination enables easy integration into automotive control modules, relay boxes, and power distribution systems.

The HFKP-012-1Z6T also provides 500V isolation voltage between coil and contact circuits, helping protect sensitive electronic components from electrical transients and improving overall system safety and reliability.

Key Features

Form 1C (SPDT / changeover) contact configuration

12VDC coil voltage

High switching capacity: 45A (NO) / 30A (NC) at 14VDC

90 coil resistance

AgSnO contact material for durability and arc resistance

European wash-tight sealed construction

3 yoke terminals for enhanced stability and current handling

500V isolation voltage

Compact vertical PCB mount design

7-pin configuration

Automotive-grade reliability for harsh environments

Typical Applications

Automotive power distribution systems

Cooling fan and fuel pump control

HVAC and compressor switching

Heavy-duty lighting systems

Battery management circuits

Industrial DC power switching applications

The HFKP-012-1Z6T combines high-current switching capability, rugged wash-tight construction, and reliable automotive-grade performance, making it an excellent choice for engineers and technicians developing durable, high-power vehicle and industrial control systems.

What's in the box
1 x HFKP-012-1Z6T 12V Automotive SPDT PCB Relay 45A Wash Tight Relay