Cranford Controls Vandal Proof Floor Mounted Door Holder
Summary
The DRX series floor mounting door retainers are ideally suited to applications where maximum protection is needed against vandalism or accidental damage. Featuring a rugged cast aluminium housing, these door retainers provide reliable electromagnetic holding with integral ejection pin technology and manual release switch functionality.
Available in both 200N and 500N holding force variants, the DRX range caters to different door weights and closer power sizes. Each model is also available in a vandal-proof version, offering enhanced protection in high-risk environments where tampering or damage is a concern.
Installation is straightforward with knockouts provided for surface mount conduit entry, and ample space to connect external wiring to the 4.0mm terminals. Each DRX door retainer incorporates a spring-loaded release pin mounted centrally within the electromagnet, ensuring that on power failure, the fire door is positively pushed away from the electromagnet for guaranteed release.
All door retainers are supplied complete with a door mounting keeper plate, with additional accessory products available including floor brackets, chains and additional keeper plates to suit various installation requirements.
Features
- Rugged cast aluminium housing for maximum vandal resistance
- Holding magnet with integral ejection pin technology
- Manual release switch for emergency operation
- Spring loaded release pin ensures positive door release on power failure
- Available in 200N and 500N holding force versions
- Vandal-proof variants available for high-risk environments
- Zero residual holding when power is removed
- IP51 protection rating against dust and water ingress
- Keeper adjustment range of ± 15 degrees
- Knockouts provided for surface mount conduit entry
- 4.0mm terminals with ample wiring space
- Suitable for door closer power sizes 3 to 6
- Complete with door mounting keeper plate
- Additional accessories available including floor brackets and chains
- Complies with EN 61000-3-2, EN 50081-1, EN 60950 and EN 1155 standards
- 24Vdc operation with ± 10% voltage tolerance
FAQ
Which holding force version should I choose?
The 200N version (20.4kg holding force) is suitable for lighter doors with door closer power sizes 3-6, whilst the 500N version (51kg holding force) is designed for heavier doors requiring greater holding strength. Consider your door weight, closer power size, and expected loads when making your selection.
What is the difference between standard and vandal-proof versions?
The vandal-proof versions (DRX-200-VP and DRX-500-VP) feature enhanced protection against tampering and accidental damage, making them ideal for public areas, schools, hospitals, and other environments where the units may be subject to misuse or vandalism.
What happens if the power fails?
Each DRX door retainer features a spring-loaded release pin mounted centrally within the electromagnet. On power failure, this pin ensures the fire door is positively pushed away from the electromagnet, providing fail-safe operation with zero residual holding.
What power supply do I need?
The DRX series operates on 24Vdc ± 10% with current consumption of 45mA for the 200N version and 90mA for the 500N version. Ensure your fire alarm system power supply can accommodate these requirements.
Are these door retainers compliant with fire safety standards?
Yes, all Cranford Controls DRX door retainers are designed to comply with the latest requirements of EN 61000-3-2, EN 50081-1, EN 60950 and EN 1155, ensuring they meet current fire safety and electromagnetic compatibility standards.
What accessories are available?
Additional accessory products include floor brackets for different mounting configurations, chains for flexible installation options, and additional keeper plates. All units are supplied complete with a door mounting keeper plate as standard.
Can the keeper plate position be adjusted?
Yes, the keeper adjustment range is ± 15 degrees, allowing for fine-tuning of the door position and ensuring optimal magnetic contact between the door retainer and keeper plate.
Specifications
- Supply Voltage And Tolerance : 24Vdc ± 10%
- Current Consumption : 45mA (200N version), 90mA (500N version)
- Minimum Rated Holding Force : 200N (20.4kg) / 500N (51kg)
- Maximum Holding Force : 250N (25.5kg) / 750N (76kg)
- Residual Holding : Zero
- Release Switch : Yes
- Protection Rating : IP51
- Keeper Adjustment : ± 15°
- Weight Per Unit Packed : 700g (200N version), 1000g (500N version)
- Door Closer Power Size : 3 – 6
- Housing Material : Cast aluminium
- Terminal Size : 4.0mm
- Mounting Type : Floor mounting
- Release Mechanism : Spring loaded ejection pin
- Compliance Standards : EN 61000-3-2, EN 50081-1, EN 60950, EN 1155
- Vandal Proof Option : Available
- Standard Accessories : Door mounting keeper plate
- Optional Accessories : Floor brackets, chains, additional keeper plates
Downloads
- Datasheet (Adobe PDF)
Additional information
| Weight | 2.1 kg |
|---|---|
| Holding Force | 200N, 500N |
| System Type | |
| Device Type | |
| Mounting | Floor |