Fermax Lock Release 540A-S Max

Fermax 30691 Electric Lock Release 540A-S Max (12Vac Automatic Fail Secure)

The Fermax 30691 is an electric lock release designed for standard door frames, featuring automatic re-locking functionality and fail-secure operation, powered by 12V AC. Its designation details are: 540 series standard body, A operation (Automatic Fail Secure AC), S type standard shield, and MAX adjustable latch. This model does *not* include a manual override lever.

Breaking down the characteristics: The 540 body fits common timber and metal frame preparations. A operation signifies Automatic Fail Secure for AC voltage – the lock remains secure (locked) without power. Applying a 12V AC pulse momentarily unlocks it. It then stays unlocked only until the door is physically opened and closed again, at which point it automatically re-locks mechanically, ensuring the door isnt left accidentally unsecure. The S shield is the standard grey flush mounting plate (approx 25x160mm). The MAX adjustable jaw allows for fine-tuning (±4mm) of the latch alignment during installation for optimal performance.

This model is ideal for 12V AC Fermax systems (like traditional audio/video kits) where the security of automatic re-locking after entry is desired, fail-secure operation is needed, and a manual override is not required. The adjustable MAX latch adds installation convenience. it is a reliable choice for residential or commercial doors needing enhanced locking security after each use.

Features

• Standard Duty Electric Lock Release (540 Series Body)
• Operation: A - Automatic Fail Secure AC (No Manual Override)
• Voltage: 12V AC
• Shield: S Type Standard Flush Shield (approx 25mm x 160mm) - Grey
• Latch: MAX Adjustable Jaw (+/- 4mm adjustment)
• Reversible design (Left/Right DIN)
• Symmetrical body
• Automatic re-locking function after door cycle
• No manual override lever
• Suitable for standard timber and metal door frames
• Operates on standard 12V AC intercom power

Technical Specifications

• Manufacturer: Fermax
• Model Reference: 30691 (Type 540A-S MAX)
• Operation Mode: Automatic Fail Secure AC
• Input Voltage: 12V AC
• Current Consumption (12V AC): Approx 980mA (verify datasheet)
• Body Series: 540 (Standard)
• Shield Type: S Type Standard Flush Plate (Grey, approx 25x160mm)
• Latch: MAX Adjustable
• Holding Force: Refer to Fermax datasheet

Dimensions

• Body Dimensions (540 approx): 75mm x 21mm (height x width) - depth varies.
• S Shield Dimensions (approx): 160mm x 25mm (height x width).
• *Consult Fermax technical documentation for precise dimensions.*