Simplex 6310-9231A 12 in. Round Synchronous Clock, Black, 110V

Simplex 6310-9231A — 12 in. round SlimLine synchronous wired clock, black case, 110 V.

This is a secondary clock, not a stand-alone timepiece: it runs on its own movement and is pulled back into step by a Simplex Time Control Center. Hourly correction resets a clock up to 59 minutes slow or 55 seconds fast, and 12-hour correction recovers one up to 11 hours 59 minutes slow, so an outage does not mean resetting a building by hand. The Series A movement also detects 58-minute, National Time, Rauland, Midnight Reset and Dukane correction, so it can replace clocks in non-Simplex systems.

• 12 in. round, black ABS case, Symmetry 1-12 hour dial face
• Operating and correction voltage 110 V / 60 Hz; input 85–130 VAC
• Average current 25 mA at 110 VAC
• Shatter-proof polycarbonate crystal
• 32°F to 120°F (0°C to 40°C)
• Four-position Molex connector; UL, cUL certified

Siblings differ by one digit: 6310-9226A and 6310-9239A are 24 V, 6310-9227A and 6310-9233A carry the 1-12/00-23 dial, and 2310-9271A is the 12 in. square. The A suffix marks the current Series A movement, not the legacy 6310-9231.

Documents

• Synchronous Clocks 6310/2310 Series A — Data Sheet (PDF)

FAQ

Does the 6310-9231A keep time on its own?
It runs on its own movement but is a secondary clock: a Simplex Time Control Center corrects it every hour and every 12 hours.

How far off can it be and still be corrected?
Hourly correction resets a clock up to 59 minutes slow or 55 seconds fast. The 12-hour correction recovers a clock up to 11 hours 59 minutes slow.

Can it replace clocks on non-Simplex systems?
Yes. The Series A movement also detects 58-minute, National Time, Rauland, Midnight Reset and Dukane correction.

What power does it use?
110 V / 60 Hz for operation and correction, with an input range of 85 to 130 VAC and an average current of 25 mA.