Automation direct safety relays are mainly applied to the safety control circuit, connecting the safety sensing elements and mechanical equipment motion controller. The working principle of safety relay interlock system: when there is a fault in the safety circuit, the intrinsic safe relay automatically detects the fault and stops the machine movement, to protect equipment and personnel safety.

Chenzhu safety rated relay is the first product to get PLe/Cat.4, SIL3 certified in China mainland. Automation and safety is the main character of the programmable safety relay module that you can be assured.

Various safety relay systems are available for you to select. We have safety relay for E-stop buttons, emergency stop buttons, two-hand control buttons. We also provide light curtain safety relay, sil 2 and sil 3 rated relays to better meet the needs of our customers. For more information, please feel free to contact us.

Safety Relay Types

CZSR Classic Series Safety Relay

CZSR Classic Series Safety Relay is a classic general-purpose safety relay with high cost performance, suitable for various industrial automation applications. Including E-stop buttons, safety gates, light beam devices, two-hand control buttons, safety mats and extension module.

E-Stop Button, Safety Gate Safety Relay

Light Curtain Safety Relay

Two-hand Push Buttons Safety Relay

Safety Mat Safety Relay

Extension Module Safetu Relay

CZSR Process Series Safety Relay

Since the beginning of the industrial age, examples of critical processes have been common. Safety instrumented systems are most commonly used in process (such as refineries, chemical, nuclear power) facilities to provide protection.

DO Signal (SIS) 24V DC 2A Safety Relay

DO Signal (SIS) 24V DC 3A Safety Relay

DO Signal (SIS) Input 24V DC 5A Safety Relay

CZSR Smart Series Safety Relay

CZSR Smart range is a smart safety controller product that can be flexibly configured with logic, and is suitable for small stand-alone automation equipment.

FAQ of Safety Relay

What is safety relay?

Safety relay offer an extra level of protection usually through a redundant wiring system.

These relays are used to enable an monitor the signals between other safety devices such as safety switched sensors, light curtains, intrinsic safety barriers and isolators. In many cases, the safety relay can be paired with a safety PLC configurable safety relay or safety controller.

What is the difference between safety relay and normal relay?

Compared to a normal relay, a safety relay have mandatory steering contact arrangement assures protection when contact fusion happens. A safety relay is a module composed of multiple relays and logic circuits. It is a circuit composition unit. In order to achieve the correct and low malfunction feature and to minimize errors and failure values, and complete each other's faults in a fault state to enhance safety factors.

How does an intrinsically safe barrier work?

Safety relays are generally composed of two or more relays and electronic circuits, so as to complement each other's abnormal defects. Even if any component fails, it can diagnose the failure and enter a safe state. And it will not affect the shutdown instructions issued to the machine, ensuring the safety of production. From the structural point of view, the safety relay generally adopts a dual-channel structure, and the channels can diagnose each other, and use a forced-oriented relay to realize the diagnosis of the output contact fusion fault.

How do safety relays improve safety?

Like electrical panel box surge protector, safety relays are devices that implement safety functions. When a danger occurs, the safety relay will play a role in reducing the danger to an acceptable level. When an error occurs, the safety relay will initiate a safe and reliable response. Each safety relay monitors a specific function.