HFKP-012-1Z3 12V Automotive SPDT PCB Relay 30A High Power Relay

The HFKP-012-1Z3 is a high-performance automotive PCB relay engineered for heavy-duty switching, reliable power control, and long operational life in demanding vehicle and industrial applications. Featuring a Form 1C (SPDT / single pole double throw) contact configuration, this relay allows flexible switching between normally open and normally closed circuits, making it ideal for advanced automotive electrical systems and high-current control applications.

Operating with a 12VDC coil voltage and a 90 coil resistance, the relay delivers stable and responsive switching performance with a coil power consumption of approximately 1.6W. Its design ensures dependable operation in automotive electrical systems where voltage fluctuations, vibration, and temperature variations are common.

The HFKP-012-1Z3 supports a powerful switching capability of 45A (Normally Open) and 30A (Normally Closed) at 14VDC, making it suitable for controlling high-current loads such as radiator cooling fans, fuel pumps, starter circuits, lighting systems, HVAC blowers, compressors, power distribution modules, and other demanding automotive accessories.

Built with AgSnO (silver tin oxide) contacts, the relay offers excellent electrical conductivity, strong arc resistance, reduced contact wear, and long switching life. This contact material is particularly effective in high-current applications where durability and consistent performance are essential.

The relay features a compact vertical PCB mounting design with dimensions of 24 × 19 × 18.5 mm, enabling efficient integration into automotive control modules, fuse boxes, relay panels, and compact electronic assemblies. Its 7-pin PCB termination provides secure and stable installation for reliable long-term operation.

Designed for harsh automotive environments, the HFKP-012-1Z3 provides strong resistance to vibration, electrical stress, and temperature fluctuations. The relay also includes 500V isolation voltage between coil and contact circuits, helping protect sensitive control electronics from transient voltages and ensuring safe system operation.

Its robust construction and high-current handling capability make it suitable for both OEM automotive systems and aftermarket vehicle upgrades where reliability and switching performance are critical.

Key Features

• Form 1C (SPDT / changeover) contact configuration
• 12VDC coil voltage
• High switching capability: 45A (NO) / 30A (NC) at 14VDC
• 90 coil resistance
• AgSnO contact material for durability and arc resistance
• Compact vertical PCB mounting design
• 7-pin PCB termination
• 500V isolation voltage
• Designed for demanding automotive applications
• Reliable high-current switching performance

Typical Applications

• Automotive electrical systems
• Cooling fan and fuel pump control
• Power distribution modules
• Lighting and auxiliary systems
• HVAC and blower motor control
• Industrial DC power switching systems

The HFKP-012-1Z3 combines high-current switching performance, durable automotive-grade construction, and flexible SPDT functionality, making it an excellent choice for engineers and technicians developing reliable vehicle power control and heavy-load switching systems.

What's in the box
1 x HFKP-012-1Z3 12V Automotive SPDT PCB Relay 30A High Power Relay