HF42F-012-2HST Medium Power Relay 12VDC DPST 5A PCB Relay

The HF42F-012-2HST relay from Hongfa is a medium-power PCB relay designed for reliable switching in industrial electronics, automation systems, control panels, and general-purpose electrical applications. Featuring a Form 2A (DPST-NO) contact configuration, this relay allows simultaneous control of two independent circuits, making it suitable for dual-line switching applications.

This model operates with a 12VDC coil rated at 270 and consumes approximately 530mW of coil power. It is designed for stable actuation and dependable performance in standard industrial control environments, providing consistent operation in PCB-mounted systems.

The HF42F-012-2HST supports switching loads up to 5A at 250VAC or 30VDC, making it suitable for lighting control systems, small motors, HVAC devices, power supplies, and industrial automation circuits. Its compact vertical PCB design allows efficient integration into control boards where moderate power switching is required.

Built with Ag contact material, the relay ensures reliable conductivity and long mechanical life under repeated switching conditions. With 4kV isolation voltage, it provides strong dielectric protection between coil and contacts, improving safety and durability in electrically noisy environments. The relay also carries UL, CUR, TUV, and CCEE approvals, ensuring compliance with international safety and quality standards.

Features

Medium-power PCB relay

Form 2A (DPST-NO) contact configuration

12VDC coil with 270 resistance

5A switching capacity at 250VAC / 30VDC

Compact vertical PCB mounting design

4kV coil-to-contact isolation

Durable Ag contact material

UL / CUR / TUV / CCEE approved

Suitable for dual-circuit switching applications

Reliable industrial-grade construction

Specifications

Model: HF42F-012-2HST (JZC42F-012-2HS)

Brand: Hongfa

Device Type: Medium Power Relay

Contact Form: Form 2A (DPST-NO)

Coil Rated Voltage: 12VDC

Coil Resistance: 270

Coil Power: 530mW

Maximum Switching Current: 5A

Electrical Rating: 5A at 250VAC / 30VDC

Isolation Voltage: 4kV

Contact Material: Ag

Termination Type: PCB Through-Hole

Dimensions: 24 × 12 × 25mm

Number of Pins: 6 Pins

Number of Poles: 2 Pole

Approvals: UL / CUR / TUV / CCEE

Ideal for industrial control systems, automation equipment, power distribution modules, HVAC controls, lighting systems, embedded electronics, and PCB applications requiring dual-circuit switching with reliable 5A relay performance.

What's in the box
1 x HF42F-012-2HST Medium Power Relay 12VDC DPST 5A PCB Relay