GTR Electromagnetic Door Holder 24VDC 400N for Fire Alarm Systems Diode Protected

Product Overview

The Elektrotrzymacz GTR is an electromagnetic door holder used for maintaining door open status in closed indoor environments, particularly as part of fire alarm systems. It is typically installed in public buildings, commercial facilities, and office complexes where regulated fire door operation is necessary. The device operates on 24 VDC power and features a 400N holding force suitable for robust fire doors.

Its integrated diode-protected circuit prevents damage from incorrect voltage polarity, a critical feature that minimizes electrical installation errors and reduces risk during system maintenance or retrofits. This specific model is recommended for fire safety contractors and facility managers seeking reliable, low-maintenance electromagnetic holders for compliance in large-scale building fire protection systems.

Key Features

• Holding force 400N ? provides secure retention for heavy fire-rated doors


• Power supply 24 VDC ? compatible with standard fire alarm and building management systems


• Low power consumption ? only 1.6W for energy-efficient operation


• Continuous duty ED 100% ? designed for permanent door holding without overheating


• Dimensions 110x85x38mm ? compact design facilitates versatile installation locations


• Integrated diode protection ? prevents circuit damage from incorrect power polarity


• Application in fire alarm systems ? meets requirements for regulated fire safety doors

Technical Specifications

• Dimensions: 110x85x38mm


• Holding Force: 400N


• Power Supply: 24 VDC


• Power Consumption: 1.6W


• Duty Cycle: ED 100% (continuous operation)


• Circuit Protection: Integrated diode

Applications

Used in fire alarm systems for maintaining fire-rated doors open in office buildings, schools, healthcare facilities, and commercial centers. Compatible with regulated fire safety scenarios requiring controlled door release on alarm activation. Suitable for bulk installation by fire protection contractors and facility managers in new and retrofit projects.

Packaging & Shipping

Standard export packaging. Unit includes the electromagnetic door holder, mounting hardware, and installation instructions.