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: Usually ships in 4 business days
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.
Lockwood Warranty
Lockwood branded products are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty periods vary by product type, with separate cover for mechanical components, electrical and electronic parts, keys, and finishes.
The summary below sets out the standard warranty structure. All warranty claims are handled by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries. Full terms and exclusions are set out in the official Lockwood warranty document linked at the base of this page.
Warranty Summary
Finish Coverage Guide
- Everbrass finishes: up to 25 years against corrosion, tarnishing and discolouration.
- Stainless steel, polished stainless steel, chrome plating and anodised finishes: typically up to 10 years.
- PVD and VIVID finishes: typically up to 10 years.
- Symmetry range finishes: typically up to 5 years.
- Decorative finishes (Antique Copper, Architectural Bronze, Oil Rubbed Bronze, Aged Brass, Polished Brass, Satin Brass and related variants): typically up to 2 years against corrosion.
- Unlacquered brass finishes naturally age and change appearance over time. This is not considered a defect.
- Tea staining of stainless steel is not covered where the required cleaning and maintenance have not been followed.
How to Make a Claim
- Contact Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries with your proof of original purchase.
- Keep the product securely packed and clearly identified, ready for assessment.
- Where a claim is escalated to the manufacturer, ASSA ABLOY may issue a case number before goods are returned.
- ASSA ABLOY assesses the claim and determines repair, replacement with the same or closest equivalent product, or refund of the purchase price.
Exclusions
- Normal wear and tear.
- Misuse, abuse, accidental damage or use outside published specifications.
- Improper maintenance or failure to follow care instructions.
- Unauthorised modification, repair or use of non-genuine parts.
- Exposure to corrosive environments including coastal air, salt spray, chemicals or pollution.
- Removal, refitment or associated labour charges.
- Products not originally sold in Australia through authorised channels.
These manufacturer warranties apply in addition to your rights under the Australian Consumer Law. Our goods come with guarantees that cannot be excluded under the ACL. You are entitled to a replacement or refund for a major failure and to compensation for any other reasonably foreseeable loss or damage. Where a failure does not amount to a major failure, you are entitled to have the goods repaired or replaced.
