Lockwood TB25-2 Drop Bolt — 12–24 VDC Fail Secure Monitored
The Lockwood Padde Series TB25 range of Drop Bolts combines engineering innovation with robust design. The TB25-2 provides Fail Secure operation for maximum protection, ideal for swing-through double action doors or applications where an electric strike is impractical. It offers 1000 kg static strength, monitored status, intelligent electronics, and tamper resistance.
Warranty
- 5 Year Tricare Warranty (Padde Series)
- Lockwood 25 Year Mechanical Warranty (Conditions Apply)
Key Features
- High security: bolt is deadlocked in the extended position
- Integrated bolt position monitoring
- Door position monitor with integrated magnet in strike plate
- Multiple orientation: can be mounted horizontally or vertically
- Fail Secure operation — bolt remains locked if power is lost
- Continuously rated solenoid
- Tamper proof: cannot be defeated with tools
- Intelligent electronics: up to 8 auto re-lock attempts, 8 sec unlock delay
- Thermal fuse protection to prevent solenoid overheating
Fire Rating & Testing
- Fire rated to AS4145.2:1993 for maximum protection
- 1000 kg static holding force ensures strength under fire door conditions
- High durability design for maximum frequency use
- Thermal fuse integrated to prevent solenoid overheating
Specifications
- Item Code: TB25-2
- Voltage: 12–24 VDC
- Start Current: 1100 mA @12 V / 1000 mA @24 V
- Holding Current: 210 mA @12 V / 90 mA @24 V
- Holding Force: 1000 kg
- Locking Mode: Fail Secure (non field-selectable)
- Monitoring: Bolt + Door position contacts
- Dimensions (Mortice): 164 × 22 mm
- Bolt Size: 12.7 × 16 mm
- Face Plate: 10 × 25 mm, Stainless Steel
- Construction: Anti-corrosion, stainless steel faceplate & strike
What's In The Box
- TB25-2 drop bolt lock body
- Stainless steel faceplate & strike plate
- Integrated door position magnet
- Fixing screws
- Installation instructions
Suitable Uses
- Swing-through double action doors
- Applications where electric strikes are impractical
- Misaligned doors
- Timer-controlled doors
- High-security fire-rated applications
Dispatch & Returns
- Estimated Warehouse Dispatch: 2–4 business days when in stock (call to confirm)
Download PDF Resources
|
Lockwood Electromechanical Door Solutions Catalogue |
|
Lockwood 25 Year Mechanical Warranty (Conditions Apply) |
Item Code Family
Accessories
Additional Information
Specification Statement: The TB25 drop bolt shall operate in both horizontal and vertical orientations. Bolt and door positions must be monitored, with an integrated reed switch provided in the strike plate. Electronics must provide up to 8 lock/unlock attempts, 8 second unlock delay, automatic relock, power reduction circuitry, and a one-time thermal fuse cut-out. Face plate and strike plate must be stainless steel.
