112 Series - Low Coil Power - Industrial Pin Out
SPDT, DPDT, 2 Amp
The 112 series relays are capable of sensing extremely low current flow. They are frequently used to
detect ground faults or in applications where applied voltage varies significantly. DC versions can sense
currents as low as 0.61mA and tolerate voltages up to 10X minimum. AC versions can sense currents
as low as 0.74mA and can tolerate voltages up to 5X minimum. Single pole DC coil versions use as little
as 12mW of power while double pole versions can be as low as 60mW. Single pole AC coil version use
as little as 160mVA while double pole versions can be as low as 800mVA. Pick-up or drop-out current
can be fine tuned by end user via knurled thumbwheel after loosening locknut.
***Remove all power to make adjustments***
Panel mount
versions only
GENERAL SPECIFICATIONS (@ 25° C)
Contacts:
Contact Configuration
Contact Material
Contact Rating
120 / 240VAC Resistive
28VDC Resistive
Contact Resistance, Initial
Coil:
Coils Available
Minimum Coil Power
Single Pole
Double Pole
3 Pole
4 Pole
Duty
Timing:
Operate Time (max)
Release Time (max)
Dielectric Strength:
Across Open Contacts
Between Mutally Insulated Points
Insulation Resistance
Temperature:
Operating
Storage
Life Expectancy:
Electrical (full load operations)
Mechanical (no load operations)
Miscellaneous:
Mounting Position
Mating Socket
Accessories
Enclosure
Weight
SPDT, DPDT
Silver
2 Amp
2 Amp
100 milliohms max @ 6VDC
AC and DC
160mVA
10mW
800mVA
60mW
-
-
-
-
Continuous
20mS
20mS
500Vrms
1500Vrms
1,000 Mohms min @ 500VDC
-20 to 60°C (-4 to 140°F)
-40 to 105°C (-40 to 221°F)
100,000
500,000
Any
27390D (P or PGF versions)
Clear Polycarbonate
7.5oz (241 grams)
PGF / P
Version
Panel Mount Wire Diagram
(Top View)
Thumb Wheel
6/5
www.struthers-dunn.com
(843) 664-3303
Sensitive - Low Input Power Relays
2 to 5 Amps
Wire Diagram
PGF Version
1
2
3
4
5
6
12
11
10
9
8
7
1
2
3
4
5
6
P Version
12
11
10
9
8
7
1.87
(47.6)
Panel Mount (No Cover) Version
1.91
(53.9)
1.37
(34.9)
2.50
(63.5)
2.13
(53.9)
SPDT
1
2
3
4
5
6
12
11
10
9
8
7
1
2
3
4
5
6
SPDT
12
11
10
9
8
7
2.63
(66.8)
2.37
(60.3)
SPDT
2.38
(60.5)
DPDT
DPDT
DPDT
112-PGF relays
have front
removable covers
permitting access to
user adjustable fine
turning of pick-up
or drop out while in
socket
112-P relays are
covered and
adjustable but must
be removed from
socket to detach
cover
Ordering Code
Series
112
112
XBX
PGF
42mAAC
Contact Arrangement
XAX (SPDT) - (1 form C)
XBX (DPDT) - (2 form C)
Construction
Panel Mount - No CODE
Plug-in / Front removable cover - CODE PGF
Plug-in - CODE P
Coil Current
Choose coil from tables on next page based on current or
voltage. Specify by current (mAAC or mADC)
CAUTION:
DISCONNECT POWER WHILE MAKING ADJUSTMENTS
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(843) 664-3303
6/6
Section 6
Sensitive - Low Input Power Relays
2 - 5 Amp
Dimensions Shown in inches & (millimeters)
Outline Dimensions
Panel Mount
2.63
(66.9)
Panel Mount Wire Diagram
(Top View)
Thumb Wheel
2.63
(66.8)
1.63
(41.4)
PGF / P Versions
0.15
(3.8)
3.56
(90.4)
2.76
(70.1)
PGF / P
Version
1.44
(36.7)
12 11
10
9
8
7
6
5
4
3
2
1
2.63
(66.8)
Maximum AC coil voltage 5 x minimum
Maximum DC coil voltage 10 x minimum
Neither to exceed 300 volts
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(843) 664-3303
6/8
Section 6
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