Fuse module EN54C, LB4/0.5A/FTA EN54C-LB4

Fuse module for fire protection and alarm systems

This fuse module, designated as EN54C-LB4/0.5A/FTA, is a key element in emergency power systems, especially in applications requiring high reliability, such as fire protection, access control, or CCTV monitoring. Designed to work with EN54C series power supplies, it provides safe power distribution to four independent circuits. Its design and functionality meet the requirements of the EN54-4 standard, guaranteeing effective protection of connected devices.

Construction and functionality

The EN54C-LB4 module has two power inputs (IN1 and IN2), which allow flexible connection to the power supply board. Each input powers two independent AUX outputs (AUX1-AUX2 for IN1 and AUX3-AUX4 for IN2). Each output is protected against short circuits by a 0.5A fuse (fuses up to 1A can be used). Built-in LEDs indicate the status of each output (L1-L4), and a red PSU LED indicates a blown fuse. Additionally, the module is equipped with a PSU relay output, which can be used for remote fault signaling – e.g., by connecting an external optical indicator.

Application and benefits

The EN54C-LB4 module finds wide application in:

• Fire protection systems: Powering smoke detectors, temperature sensors and other alarm devices.
• Access control systems: Securing the power supply of card readers, electromagnetic locks and access controllers.
• CCTV monitoring systems: Powering industrial cameras and digital recorders.
• Generally in security systems: everywhere where a reliable power supply of critical devices is required.

Why choose this module?

• Compliance with standards: Meets the requirements of the EN54-4 standard, ensuring safety and reliability.
• Short-circuit protection: Fuse protection protects circuits from overload and short circuit.
• Optical signaling: LED output status indication facilitates diagnostics and fault location.
• Remote fault signaling: Relay output enables remote monitoring of the module status.
• Easy installation: Compact dimensions (150 x 52.5 x 27 mm) facilitate installation inside the power supply housing.
• Long warranty: 5 years from the date of manufacture provides peace of mind and investment security.

Additional information: the module's supply voltage is in the range of 20-30 V DC, and the current consumption is 15-25 mA at an input voltage of 20-30 V DC. The module operates at a temperature of -10°C to +50°C and has an environmental class II.