Safety Interlock Switches Certification Requirements in Different Regions
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- May 29,2025
Summary
Industrial safety switch interlocks require region-specific certification. This article describes the certification and technical requirements for industrial safety door switch in the EU, the US, and Canada. All regions require products with high reliability, emergency unlocking functions, and compatibility with safety systems such as PLCs.
In addition to some general requirements, different regions or countries have additional certification and technical specifications for equipment safety switches. Understanding the relevant requirements can avoid problems caused by unfamiliar regulations when purchasing, and improve the safety of production facilities and workplaces. Today, DADISICK will introduce to you the certification and technical requirements for industrial safety interlock door switch in several regions.
CE certification
This is a mandatory certification mark, indicating that the product complies with the requirements of relevant EU directives and coordinated standards. For industrial safety door interlocking switch, the directives usually involved include:
1. Machinery Directive (2006/42/EC)
To ensure the safety of mechanical equipment, industrial safety locking device, as part of mechanical equipment, must comply with its requirements.
2. Low Voltage Directive (2014/35/EU)
Applicable to electrical equipment within the rated voltage range to ensure the electrical safety of the product.
3. Electromagnetic Compatibility Directive (2014/30/EU)
Requires that the product will not generate electromagnetic interference during operation and has a certain anti-interference ability.
Harmonized standards:
1. EN ISO 13849-1/-2
Involves the design and safety level assessment of safety-related components and control systems, and specifies the safety performance requirements and evaluation methods for safety interlock switch.
2. EN ISO 14119
Specifies the safety requirements for removable safety protection devices (such as safety doors) and their interlocking devices, involving the design, installation and use of safety interlock switch.
3. EN 60204-1
Regulates electrical equipment in mechanical safety, including requirements for electrical performance, wiring, grounding, etc., of industrial safety door locking safety switch.
4. EN 60947-5-1/-5-3/-5-5
Specifies general requirements for industrial switchgear and control equipment, special requirements for proximity switches, and special requirements for electromechanical control equipment, respectively, and is applicable to different types of door safety switch interlock products.
1. UL Certification
Issued by Underwriters Laboratories, it is a widely recognized safety certification in the U.S. market. For industrial safety switch interlock, UL certification will be evaluated based on different product types and application scenarios to ensure that they meet U.S. safety standards.
2. OSHA (Occupational Safety and Health Administration) Standards
OSHA in the United States has established safety and health standards for various workplaces. Although OSHA itself does not directly certify products, the use of industrial safety door interlock switches must comply with OSHA's requirements for workplace safety, such as providing adequate protection to prevent employees from being injured by mechanical hazards.
3. NEC (National Electrical Code, NFPA 70)
Specifies safety requirements for electrical equipment and wiring. The electrical part of the industrial safety interlock door switch needs to comply with the relevant provisions of the NEC to ensure electrical safety.
Model: OX-W2
Factory packaging: 1 Safety Locking and 2 Keys accessories, cable
Lock material: Metal
Outputs: 4 sets of gold-plated contacts
Tensile strength when locked: Locking force 1300N
Contact type: 14 contact combinations
Optional back unlocking function: Indicator light + emergency unlocking
Adapted to 7 types of operation keys
Certification: TUV, CE
CSA certification: Provided by the Canadian Standards Association, it is a widely recognized safety certification in Canada. Industrial door safety interlock need to pass CSA certification to prove that they meet Canadian safety standards, including electrical safety, mechanical safety and other requirements.
1. Performance and reliability
Industrial safety interlock switches should have high reliability, long life, and be able to operate stably in various harsh environments. For example, they should have good vibration and impact resistance, as well as the ability to adapt to different temperatures, humidity and corrosive environments.
2. Interlocking and emergency unlocking functions
As an interlock safety device, safety interlocking switches usually need to have reliable interlocking functions to ensure that the machine equipment cannot be started or operated when the door is not completely closed and locked. At the same time, in an emergency, it should be able to be unlocked quickly and easily to allow personnel to evacuate safely.
3. Compatibility with other safety systems
It can be effectively integrated and coordinated with other safety equipment and systems such as safety relays, PLCs (programmable logic controllers), safety control systems, etc. to achieve overall safety interlocking control.
Used for monitoring places such as safety doors and windows.
Safety door switch providing robust security and reliable access control.
Protecting your facility and employees.
Used for monitoring places such as safety doors and windows.
Used for monitoring places such as safety doors and windows.
Cascade type: Support cascade
Output type: Dual PNP
Coding type: Unique code
6-core direct wiring dual PNP output with cascade 2M line, Actuator with unique code