One Shot Time Delay Relays National Controls Corporation

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Single Shot Time Delay Relays

T2 Series


	Voltage is applied to the timer at all times. Upon a momentary or maintained closure of a normally open isolated start switch, the output relay coil is energized and the time delay starts. At the end of the preset time delay, the relay coil is de-energized and the timer is ready for a new cycle.
Note: 1) Do not apply voltage or ground to the Start switch, 2) Switch leads should be shielded when running close to other wires (Start switch supplied by customer)


File #E59090 Digital Timing Circuit ± 1% Repeatability Fiberglass Reinforced Circuit Board Flame-Retardant Polycarbonate Housing Made in U.S.A.	100% Life Tested Time Delays To 1 Hour Superior Transient Protection Internal Components Supported By Heavy-duty Chassis Reinforced Locator Pin

Time Delay
Adjustment: Knob, factory fixed on special order (Minimum order required)
Range: 50 mS to 1 hour in 11 ranges
Repeatability: ±1% at constant temperature
Accuracy: Maximum time -0%, +10%;
                    Minimum time +0%, - 50%
Reset Time: 400 milliseconds maximum

Input
Operating Voltage: 24, 120 VAC; 12, 24 VDC ± 10% (D.C. models have reverse polarity protection. Unfiltered input voltage to them must be full-wave rectified)
Start Switch Closure Time: 20 milliseconds minimum
Power Consumption: 3 VA maximum
Frequency: 50/60 Hz

Output
Type: Relay Contacts, S.P.D.T. (1 form C) or D.P.D.T.            (2 form C) Silver Cad. Oxide material
Rating: 10 amp. max. resistive at 240 volts A.C.;
               100 mA at 5 VDC min. load current
Life: Mechanical -10,000,000 operations
          Full Load - 500,000 operations

Protection
Transient Voltage: 12 and 24 volt timers are protected by an 8.8 joule metal oxide varistor; 120 volt timers are protected by a 30 joule metal oxide varistor
Dielectric Breakdown: 1500 VAC, RMS minimum at 60 Hz between input and outputs and between outputs

Mechanical
Termination: 8-pin or 11-pin plug
Mounting:
Socket Mount - 8-Pin Part Number MSO-0008P-012
Socket Mount -11-Pin Part Number MSO-0011P-012

Environmental
Storage Temperature: -23°C to 70°C
Operating Temperature: -23°C to 55°C