BEST W Series 1W7 Electric Key Switches provide key-controlled electrical switching for authorized commercial door and building security functions. Choose an exact model: the contact form, maintained/momentary operation, key position and enclosure depend on the factory model code. All options below are offered as individual variants, retaining original SKU, price and shipping weight.

Technical Features and Available Contact Functions

• 7-pin BEST small-format interchangeable-core housing: Match the control and operating key system to the building's keyway; verify if the actual interchangeable core and keys are included.
• 626 Satin Chrome: Brushed architectural finish for the listed W Series keyed electrical controls.
• SPST: One pole / one throw switching for a specified single contact path.
• SPDT: One pole / double throw changeover circuit with common and alternate contact paths.
• DPST and DPDT: Two-pole single- or double-throw controls for separately specified circuitry.
• TPDT: Three-pole double-throw electrical switching as defined in the model's technical diagram.
• Dual SPDT: Two independent single-pole changeover contact groups, subject to their exact model configuration.
• Maintained or momentary: Maintained functions latch in a keyed position; momentary functions release from the actuated position as designed.
• SWR weather-resistant box: Included only in the 1W7B2626SWR model; other versions do not automatically include an enclosure.

BEST W Series Model Comparison

Match the exact part code and original circuit description. Model-specific key removal positions and switching behavior are not interchangeable.

Installation and Configuration Checklist

1. Identify the required contact circuit by its electrical drawing; verify maintained versus momentary operation before selecting the switch.
2. Confirm SPST/SPDT/DPST/DPDT/TPDT/dual-SPDT contact arrangement, number of poles, common, NO and NC terminals, and safe contact load.
3. Check the exact key position, number of operating positions, key rotation and permitted key removal positions.
4. Verify the 7-pin BEST interchangeable-core/keyway specification and permanent core, operating and control key inclusion.
5. Choose a mounting box and environmental rating suitable for the door frame, wall or control panel; use the SWR model only where specifically required.
6. Connect to the required low-voltage door-control, access-control or alarm relay and test the complete operating and emergency egress sequence.

Commercial Applications and Order Notes

Appropriate for qualified door hardware, industrial controls, facility security and institutional access-control projects requiring authorized key operation. This is a key-operated switch, not a complete electric door lock or controller. The selected factory SKU determines exact electrical contacts and mechanical key positions. Any control panel, power supply, electric lock, separately required core/keys or additional conduit is sold separately unless expressly included.