286/287 Series - Squre Base Time Delay Relay
SPDT - 3PDT, 10 Amp
The 286 on delay and 287 off delay are square base, bladed versions of time delay relays. Both AC and
DC versions are available. On delays can have up to three poles. The timing circuit is a fully encapsulated
E13324 precision RC (resistor – capacitor) network typically used in applications where oscillators are not desired.
Fixed time and externally adjustable versions are available. The package on this series is typically socket
mounted. It can also be panel mounted allowing direct connections to terminals with quick-connects or
soldering.
GENERAL SPECIFICATIONS (@ 25° C)
Timing:
Functions Available
Time Range
Timing Adjustment
Timing Repeatability
(Constant voltage and temperature)
Reset Time maximum
Input Pulse Length minimum
Contacts:
Contact Configuration
Contact Material
Contact Rating
120 / 240VAC Resistive
28VDC Resistive
Motor 120VAC
Motor 240VAC
Minimum Contct Load
Contact Resistance, Initial
10 Amp / 10 Amp
10 Amp
1/3Hp
1/2Hp
500mW
100 milliohms max @ 6VDC, 1A
AC and DC
2.75VA 2W
85% to 110% of nominal
80% to 110% of nominal
Yes
Yes
Continuous
Dielectric Strength:
Across Open Contacts
Between Mutally Insulated Points
Insulation Resistance
Life Expectancy:
Electrical (full load operations)
Mechanical (no load operations)
Miscellaneous:
Mounting Position
Mating Socket
Enclosure
Weight
7/11
150mS
50mS
SPDT, DPDT, 3PDT
Silver Alloy
Coil:
Coils Available
Nominal Coil Power
Input Voltage Tolorance -AC
Input Voltage Tolorance -DC
Transient Protection
Reverse Polarity Protection
Duty
Temperature:
Operating
Storage
On-delay, Off-delay
Up to 300 seconds
Knob
3%
500Vrms
1500Vrms
1,000 Mohms min @ 500VDC
-20 to 70°C (-4 to 158°F)
-40 to 85°C (-40 to 185°F)
100,000
10,000,000
Any
SK-SQB11-DS
Clear Polycarbonate
5.0oz (142 grams)
www.struthers-dunn.com
(843) 664-3303
