Marsh Bellofram Automatic Timing & Controls Division 329A Series Economical Time Delay Relay - Marsh Bellofram - #1

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800.727.5646 automatictiming.com Automatic Timing & Controls 329A Series Time Delay Relays // 329A Series 55 The most economical Solid-State TDR offered from ATC, the 329A on-delay TDR with plug-in base maintains excellent repeat accuracy despite wide voltage and temperature variations. A choice of eight fixed ranges are available from 0.3 seconds to 3 minutes. PRICE/PERFORMANCE VALUE: The economical 329A is the lowest cost TDR ever offered by ATC. Ruggedly designed into a 36 x 36 mm housing, the 329A On-Delay TDR combines both highly accurate and repeatable timing with industrial quality that is usually found in only the more expensive timers. CHOICE OF RANGES: The 329A is offered in a choice of eight different fixed ranges between 0.3 seconds to 3.0 minutes to permit optimum setting accuracy. The dial face clearly displays the range. DESIGNED FOR INDUSTRIAL SERVICE: The 329A incorporates features designed to ensure a long trouble-free life expectancy, even in difficult industrial environments: high impact resistant housing with octal plug-in base that is easily surface/DIN or panel mounted; a DPDT 5 amp relay rated for 10 million operations at no load; and an oscillator-based timing circuit for high accuracy even with changes in temperature and voltage. HIGH ACCURACY: The 329A’s timing circuit is not a simple RC circuit, but it utilizes the sophistication of a proprietary integrated circuit that includes counting technology along with a stable oscillator to provide repeatable time delays. Timing begins when the start switch is closed. This starts an oscillator which runs at a frequency determined by the time setting. A fixed number of counts from the oscillator determines the end of the time cycle. The time required to accomplish this depends on the oscillator frequency. At time out, the built-in relay transfers its contacts. These contacts remain transferred until the start switch is opened or power is removed by some other means. The 329A then resets and is ready for another cycle. E c o n omi c a l T i m e D e l a y R e l a y TERMINAL WIRING TYPICAL CIRCUIT ON-DELAY \\\WIRING MODEL NUMBER >>>>>> 329A Q Range 361 Q 10 X 0.3 SEC 1 SEC 362 3 SEC 363 5 SEC 364 10 SEC 365 30 SEC 366 1 MIN 367 3 MIN 368 special 000 Voltage & Frequency 120 VAC, 50/60 Hz Arrangement On Delay Special, use K in features 00 Features Standard Special K \\\OPERATION