
Intrinsically-Safe Switch
Model ISS-102C-M-LC
Features:
• MSHA evaluated (Mine Safety and Health Administration)
• LED indicates output relay status
• Compact design
• Finger-safe terminals
• DIN rail or surface mountable
• Pump-up or pump-down operations
• Debounce time delay (2 seconds)
• 5-year warranty
• Made in USA
SymCom’s ISS-102C-M-LC (Latching Controller) is an intrinsically-safe
switch for interfacing between hazardous and non-hazardous areas. It
is a dual-input, single output (Form C), pump controller with latching/
differential logic. Both input channels are compatible with switches (oat,
pressure, etc.) and resistive probes (xed 100kΩ threshold). The unit is
congurable for pump-up or pump-down applications.
Each input channel is “active” when the corresponding switch is closed (or
low resistance is detected, if using probes). When the LAG input (CH2) is
activated, the output contact closes. Following latching/differential logic,
the output contact remains closed until both the LEAD (CH1) and LAG
(CH2) inputs are deactivated. The green RUN LED illuminates when the
output relay is energized.
(605) 348.5580 / (800) 843.8848 / Fax (605) 348.5685
customerservice@symcom.com / technicalsupport@symcom.com
Rev. 0510

Specications
Functional Characteristics
Entity Parameters
Hazardous Locations
Adjustments/Settings
Sensitivity (for resistive probes)
Mode Selection
Debounce Time Delay
Input Characteristics
Supply Voltage
Frequency
Output Characteristics
Relay Output Rating (Form C):
Pilot Duty
General Purpose
Depluggable Connector (included)
LED (green)
General Characteristics
Operating Temperature
Maximum Input Power
Terminal Torque
Wire Gauge
Standards Passed
Electrostatic Discharge (ESD)
Radio Frequency Immunity (RFI)
Fast Transients
Safety Marks
MSHA Evaluated
Dimensions
Weight
Mounting Method
Voc = 16.8V Ca = 0.39µF
Isc = 1.2mA Po = Voc * Isc
La = 100mH 4
Class I, Division 1 & II, Groups A, B, C & D
Class II, Division I & II, Groups E, F & G
Class III locations
100kΩ (fixed)
Differential/Latching; 1-channel or 2-channel switch
2 seconds
120VAC nominal
50/60 Hz
180VA @ 120VAC, C150
5 Amps @ 120VAC
Phoenix Contact - Series MSTB plugs (or equivalent)
Output Relay Status Indicator
-20o to 55o C (-4o to 131o F)
2 W
6 in.-lbs.
12-20 AWG Solid or stranded
IEC 61000-4-2, Level 3, 6kV contact, 8kV air
IEC 61000-4-3, Level 3, 10V/m
IEC 61000-4-4, Level 3, 4 kV input power terminals, 2kV input/
output terminals
File #18-ISA070001-0
3.5”H x 2.1”W x 3.2”D (D w/ out connector - 2.5”)
9 oz.
DIN Rail or Surface Mount (#6 or #8 screws)
Enclosure Dimensions
2.350
How to order:
Part Number: ISS-102C-M-LC
(605) 348.5580 / (800) 843.8848 / Fax (605) 348.5685
customerservice@symcom.com / technicalsupport@symcom.com
Rev. 0510