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American National Standard for Power Supplies for Electronic Access Control
Standard ANSI/BHMA A156.35-2025 establishes performance requirements for power supplies specifically designed for use with electronic access control hardware and related electrical components to distribute power. Products are required to meet minimum performance criteria and given an energy efficiency rating.
BHMA has created this series of Hardware Highlights to provide useful, accessible information about builders hardware for anyone with an interest in devices that hang, control, secure, and trim the doors. BHMA is the trade association which represents almost all of the North American manufacturers of builders hardware. One of its main activities since 1983 has been the development and maintenance of ANSI-approved standards for over 40 separate product categories.
Sustainability: Power supplies contribute to building sustainability through their verified durability, as well as material characteristics such as recycled content and recyclability. The reliable closing and sealing of openings can also contribute to energy conservation. BHMA has developed Product Category Rules, which will further define sustainability requirements and guide life cycle assessments and environmental performance declarations
Product Performance: Purchasers of this Standard (http://buildershardware.com/cpd) can be assured products will perform to their expectations.
Below are an explanation and some examples of the evaluations conducted for certification:
Power Supplies shall meet the requirements of one or more of the following, UL294 Standard for Access Control System Units, UL603 Standard for Power Supplies for Use with BurglarAlarm Systems, or UL2610 Standard for Commercial Premises Security Alarm Units and Systems
The efficiency is evaluated and declared by measuring the Input and Output Power when the power supply is loaded at 20%, 50%, and 100% of the manufactures stated output capability
The response time of the power supply to compensate for instantaneous load changes to the output is another evaluation performed at each output voltage setting (all user available outputs at all possible voltage settings, example: 12V and 24V)
Type Numbers are shown in the following format:
