SERIES
12 PIN, 10 AMP, TIME DELAY RELAY
236/237/238
SERIES 236 ON DELAY, 237 OFF DELAY & 238 BATCH CONTROL
INTERVAL (SEE NOTE 3)
AC OR DC INPUT
DPDT OR DPDT WITH 1 N.O. CONTACT ON SERIES 236 & 238
12 PIN PLUG-IN WITH LOCKING CLIP
TIMING: SCREWDRIVER ADJUSTABLE OR FIXED
UL Recognized
File No. E13224
GENERAL SPECIFICATIONS
INPUT
Nominal Voltage:
AC: 24 to 240, DC: 12 to 125
AC - 85% of Nominal
Minimum Oper. Voltage:
DC - 80% of Nominal
Max. allowed voltage:
110% of nominal voltage
CONTACTS
Contact Material:
Rating:
Silver Cadmium Oxide.
10 Amps @ 120 VAC res.
10 Amps @ 28 VDC
OPERATIONAL CHARACTERISTICS
Repeatability:
DC: ± 3%: @ 20˚C. AC: ± 3% +16 mS
@ 20˚C.
Accuracy:
Adjustable: ± 10% Within temperature
& voltage range. Fixed: ± 10% @ 25˚C
The Series 236, 237 and 238 Time Delay Relay consists
of a standard 219 industrial relay and a solid state timing
module to provide delayed transfer of relay contacts after
application of power or activation of control switch. The
relay and timing module are enclosed in a flame resistant
polycarbonate cover.
Min. waiting time before starting
next cycle (Reset Time):
100 mS (for timing cycle up to 60 sec.
150 mS for timing cycle 60 to 300 sec.
INSULATION CHARACTERISTICS
Dielectric Strength:
500 V rms across open contacts,
1500 V rms between output contacts
and ground (Locking clip). (See note 4).
1000 Megohms min. @ 500 VDC.
5 mS, 0 to 2000 V 20 uSec peak
No false contacting if power is
Insulation Resistance:
Transient Protection:
False Contacting:
interupted during timing.
Inverse polarity protection:
DC operated are polarity protected. but
will not operate if polarity is reversed.
ENVIRONMENTAL CAPABILITIES
Struthers-Dunn
Ambient Temperature Rating:
- 10˚C to +70 ˚C
Typical Part Number
236 ABX P 020
120A
LIFE EXPECTANCY
Mechanical:
10 Million Operations no load
100,000 Operations @ Rated Load.
Series
Electrical:
236 - ON DELAY
237 - OFF DELAY
MISCELLANEOUS
Enclosure:
238 - BATCH CONTROL INTERVAL
Clear Polycarbonate
8.6 oz approx. (244 g)
Contact Arrangements
ABX (DPDT & 1 N.O. Contact) 236 &
238 only).
Weight:
XBX (DPDT)
Mounting Options
P
(Plug-in)
Timing Ranges
0.2 - 12 Sec - Code 012**
0.2 - 20 Sec - Code 020
2.0 - 200 Sec - Code 200
Adjustment Options
Adjustment Screw) - No Code
Fixed Delay - Specify Fixed Time & Code F *
Operating Voltage
AC; 24, 48, 120, 240 (Add "A" )
DC; 12, 24, 48, 115-125 (Add "D")
Code 012**- 12 Second timing not available on 237 & 238 models.
(F * Models) - timing code does not apply. Specify single delay time requirement.
Example of typical fixed time delay relay part number- 236XBXP-3.5F-120A
(ON DELAY, DPDT, 3.5 SEC FIXED, 120 VAC INPUT POWER).
NOTES:
1. 236,237,238 - External resistor (to program time delay) or jumper (for
built-in timing) must be connected to terminals 8 & 9.
2. 237 models require an external control switch between terminals 5 & 6.
3. 238 switches contacts when input power is applied and starts timing.
Contacts switch back to original position at end of timing cycle. Power must
be removed to reset timer. If input power is interupted during the timing
cycle, timing ends immediately and the relay resets.
4. Dielectric withstanding voltage testing of the Control circuit may damage
the solid state components.
SEE SECTION 10 FOR MATING SOCKETS
PAGE 129
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ETC [ ETC ]
