B&B Locks A1 Basic 50 SA Fail-Safe Electric Lock / pc

Product

The BB Locks A1 Basic 50 SA is an electromechanical high security lock designed for robust access control. It features a fail-unlocked mechanism that releases the lock in the event of a power failure, making it ideal for emergency and public access applications.

Specifications

• Hardened steel deadbolt with anti-sawing axis and reinforced locking elements
• Stainless steel striker plate with molded or adjustable cup
• Compatible with 17 mm europrofile and 22 mm round cylinders
• 20 mm bolt projection for secure door engagement
• Hall effect sensors for highly reliable detection of door and bolt status
• Protection against humidity via polyurethane resin encapsulation
• Supplied with removable screw terminal connectors
• Fire tested to 60 minutes (BSEN1634-1 timber door-set)
• Power supply: 24 V DC ±5%
• Peak current: 2.2 A at locking; holding current: 130 mA
• Signal lines for bolt status and door position
• Side load resistance in excess of 5500 lb force

Usage

Once the door is closed, integrated Hall sensors detect the striker plate. The bolt is ejected by a spring and immediately locked. In the event of a power outage, the lock automatically releases for safe egress, but mechanical override via cylinder is always available, even under significant lateral load.

FAQ

1. What happens if the power fails?
   The A1 Basic 50 SA unlocks automatically, allowing free passage in emergencies.

2. Can the lock be operated manually if needed?
   Yes, mechanical override is always possible with a compatible profile cylinder.

3. What kind of doors is this lock suited for?
   Suitable for both single and double action doors, including emergency exits and access-controlled public doors.

4. Is the lock resistant to physical attack?
   Yes, it features a hardened bolt, anti-sawing technology, and high resistance to side loads.

5. What door signals are available?
   Signal lines indicate both bolt locking status and door position (open/closed).

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