Struthers-Dunn
Struthers-Dunn
407 East Smith Street, Suite B
Timmonsville, SC 29161
Telephone: (843)346-4427
Fax: (843)346-4465
Email: info@struthers-dunn.com
Website: www.struthers-dunn.com
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Rugged, industrial time delay versions of the popular 219 series. On delay, off delay and interval timing is available. Contacts can be configured up to four pole double throw or six pole single throw. Blow out magnets can be added to increase DC switching capability. Time ranges are adjustable over a 1:100 range. Locking shaft potentiometer and integral hold down clip are standard. A large option list makes this product easily customized for special applications.

Nuclear versions available

Additional contact configurations and coil options are available – please use the RFQ/RFI tab above to submit your request.
Unit of Measure

Specifications

Series

 N/A 237

Contact Arrangement

 N/A XBX (DPDT) - (2 form C)

Mounting Options

 N/A Plug-in

Timing Range

 N/A 2.0 - 200 s

Adjustment Options

 N/A Locking shaft potentiometer

Operating Voltage

 N/A 115-125 VDC

Timing

Functions Available

 N/A On-delay, Off-delay, Interval

Time Range

 N/A Up to 7 hours

Timing Adjustment

 N/A Locking shaft potentiometer

Timing Repeatability (Constant voltage and temperature)

 N/A 3%

Reset Time maximum

 N/A 150

Input Pulse Length minimum

 N/A 50

Contacts

Contact Configuration

 N/A DPDT, DPDT+NO

Contact Material

 N/A Silver Alloy Gold Diffused

Contact Rating

 N/A 10 A

Contact Rating 120 / 240VAC Resistive

 N/A 10 A / 5 A

Contact Rating 28VDC Resistive

 N/A 10 A

Minimum Contact Load

 N/A 500 mW

Contact Resistance, Initial

 N/A 100 milliohms max at 6VDC, 1A

Coil

Coils Available

 N/A AC and DC

Transient Protection

 N/A Yes

Reverse Polarity Protection

 N/A Yes

Nominal Coil Power AC

 N/A 5 VA

Nominal Coil Power DC

 N/A 2.5 W

Input Voltage Tolerance - AC

 N/A 85% to 110% of nominal

Input Voltage Tolerance - DC

 N/A 80% to 110% of nominal

Duty

 N/A Continuous

Dielectric Strength

Across Open Contacts

 N/A 500 Vrms

Between Mutually Insulated Point

 N/A 1500 Vrms

Insulation Resistance

 N/A 1,000 Mohms min at 500VDC

Temperature

Operating

N/A -20 to 70 ºC-4 to 158 ºF

Storage

 N/A -40 TO 105 ºC-40 to 221 ºF

Life Expectancy

Electrical (full load)

 N/A 100,000

Mechanical (no load)

 N/A 10,000,000

Miscellaneous

Mounting Position

 N/A any

Mating Socket

 N/A 12 pin = 27390D
14 pin = 33377D

Accessories

 N/A Hold down clip integral to relay

Enclosure

 N/A Clear Polycarbonate

Weight

 N/A 8.6 oz244 g