NR-HD-28V Mini Telecom Relay Form 1C 28VDC Coil 1A PCB Relay

The NR-HD-28V Mini Telecom Relay is a compact, high-reliability PCB-mounted electromechanical relay designed for telecommunications equipment, signal switching systems, instrumentation, security devices, and low-power electronic control applications. Featuring a 28V DC coil and a Form 1C (SPDT) contact configuration, this relay delivers precise and efficient switching performance in a miniaturized footprint.

Engineered for space-constrained applications, the NR-HD-28V offers a highly compact design measuring just 20 × 10 × 10 mm, making it ideal for high-density PCB layouts where minimal space usage is critical. Despite its small size, it maintains dependable electrical performance suitable for professional-grade electronic systems.

The Form 1C contact arrangement provides a single changeover pole, enabling flexible switching between two circuits. With a maximum switching current of 1A and an electrical rating of 1A at 20VDC, this relay is optimized for low-power signal switching and telecom-grade applications where accuracy and reliability are essential.

The relay operates from a 28V DC coil supply with a coil resistance of 2.5k and a low coil power consumption of 200mW. This efficient coil design ensures stable actuation while minimizing energy usage, making it suitable for continuous or long-duration operation in electronic systems.

Equipped with gold-plated (AuCo) contacts, the NR-HD-28V provides excellent conductivity, low contact resistance, and enhanced corrosion resistance. This ensures high signal integrity and long operational life, particularly in low-current and communication circuit applications.

For improved electrical safety, the relay provides an isolation voltage of 1kV between coil and contact circuits, helping protect sensitive components from electrical noise and transient voltages. UL and CSA approvals confirm compliance with internationally recognized safety and quality standards.

The polarized design ensures correct orientation during installation, reducing assembly errors and improving reliability in automated PCB manufacturing environments.

Key Features

28V DC coil operation

Form 1C (SPDT) contact configuration

Maximum switching current: 1A

Electrical rating: 1A at 20VDC

Ultra-compact mini telecom design

Coil resistance: 2.5k

Low coil power consumption: 200mW

Gold alloy (AuCo) contacts for signal integrity

Isolation voltage: 1kV

UL/CSA approved

7-pin PCB connection

Compact size: 20 × 10 × 10 mm

Polarized design for correct installation

Applications

Telecommunications equipment

Signal routing systems

Data communication devices

Instrumentation and monitoring systems

Security and alarm systems

Low-power control circuits

Embedded electronic systems

Test and measurement equipment

Audio and signal switching applications

General-purpose PCB switching applications

Summary

The NR-HD-28V Mini Telecom Relay is a compact and reliable PCB relay featuring a 28VDC coil, Form 1C contact configuration, and 1A switching capability. With gold alloy contacts, polarized design, 1kV isolation, and UL/CSA approvals, it delivers precise, low-power signal switching performance ideal for telecommunications and sensitive electronic applications

What's in the box
1 x NR-HD-28V Mini Telecom Relay Form 1C 28VDC Coil 1A PCB Relay