Briton 3934 Electromagnetic Hold Open/Swing Free Door Closer

Briton 3934.FH Door Closer - Reliable Fire Door Control 

The Briton 3934.FH electromagnetic door closer combines safety and convenience in one robust unit. Designed for controlled door closing in high-traffic environments, it offers hold-open and swing-free functionality, making it ideal for fire-rated doors in commercial and public buildings. This CE and UKCA marked, Certifire approved closer provides assured compliance with fire safety regulations while ensuring ease of movement.

The swing-free mode allows doors to move as if no closer is fitted - perfect for care homes where ease of access is crucial. Hold open function keeps doors held in an open position. Both variants close automatically when the alarm releases them. This ensures safe and effective fire protection. Hold open door closers are ideal for high-use doors such as corridors in schools, or where items are frequently moved around, like hospitals. Select the mode at the point of installation.

Key Product Features:

• Template adjustable power size EN 3-4
• Silver or satin stainless steel finish
• Maximum door width: 1100mm
• Maximum door weight: 80kg
• Hold open or swing free function
• EN 3-4 Fig. 1 pull side and Fig. 61 transom push side mounting
• EN 3 Fig. 66 push side mounting parallel arm application
• Adjustable closing speed
• Adjustable latch action
• Operating voltage: 24V DC 90mA
• Built in test switch
• 330mm armoured power loop
• Maximum opening angle:

          180° Fig.1 and Fig. 61 EN 3

          110° Fig.1 and Fig. 61 EN 4

          170° Fig.66 in EN 3

• Fire tested to EN 1634-1 for use on timber fire doors up to 240 minutes
• CE marked - 2812-CPR-AE5012
• Certifire Approved - CF5598
• UKCA marked - 1121-CPR-UK-AE7614
• Fully certified to EN 1154 and EN 1155
• Satisfies the requirements of Approved Document M
• Environmental Product Declaration in accordance with ISO 14025 and EN 15804
• Supplied with armrest and brackets
• 10 year mechanical guarantee
• 2 year electrical guarantee
• Cover dimensions: 300mm x 75mm x 50mm

Enhanced Fire Safety and Compliance

Electromagnetic door closers play a crucial role in passive fire protection strategies, ensuring doors close automatically when needed. The 3934.FH electromagnetic overhead closer is Certifire approved, UKCA and CE marked, meaning it has undergone rigorous testing to meet fire safety standards. 

The ability to integrate with a building’s fire alarm system means doors will automatically release from their open position in the event of an alarm activation or power failure, ensuring a compliant and effective fire barrier. Make sure to fit Automatic Fire Door Keep Clear signs to both sides of the door when using these closers.

This Briton door closer is suitable for doors with up to 2 hour fire rating. Whether it’s schools, healthcare facilities, office buildings, or hospitality, it provides the necessary balance between ease of access and passive fire safety requirements.

Adjustable Power Size and Easy Installation

With an adjustable power size of EN 3-4, the Briton 3934 can accommodate doors up to 1100mm wide and 80kg, providing a reliable solution for a variety of internal doors. The universal fixing makes it suitable for both pull and push-side mounting, allowing flexibility in installation.

Fine-tune the closing and latching speeds to meet the specific needs of your facility and its users. Regular maintenance - weekly and quarterly visual and functional checks - as recommended by the manufacturer, will contribute towards the continued functionality and longevity of this, and any, door closer.

A Dependable Solution for Fire-Rated Doors

This Briton electromagnetic door closer is a high-performance solution for fire-rated doors, offering the perfect combination of accessibility and fire safety compliance. With its hold-open and swing-free functions, adjustable power size, and Certifire approval, it is a reliable choice for commercial, healthcare, education, and hospitality sectors.

For buildings where fire safety is non-negotiable, this magnetic closer ensures easy access when needed and secure closure when required. Shop our fire door ironmongery range today for compliant hinges, handles, locks, and more.