Littelfuse ISS-105-ISO-4, ISS-105 Series, Five-Channel Intrinsically Safe Switch, 120VAC, 4-Channel Intrinsically-Safe Only
FOR ALL ORDERS OUTSIDE CANADA, CUSTOMERS ARE RESPONSIBLE FOR ANY IMPORT DUTIES, TARIFFS, TAXES, AND CUSTOMS FEES THAT MAY APPLY TO THEIR ORDERS.
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The ISS-105 is a “smart” five-channel intrinsically safe relay and pump controller. The ISS-105 can be configured for pump-up or pump-down applications or as a five-channel relay covering a wide variety of applications.
The ISS-105 has a long list of features that are needed for multiple pump applications and can indicate low, high and out-of-sequence alarms. If an out-of-sequence alarm occurs, the skipped pump(s) will be started as intended.
The Model ISS-105 can be set-up to do non-alternating control, alternating control and alternating control with one non-alternating pump. The non-alternating pump is intended for use with an emergency or jockey pump. The ISS-105 can start an emergency pump once every 50 cycles to keep it working freely. Using the built-in DIP switches, individual pumps can be disabled when taken out of service for repair or maintenance.
Features & Benefits
. 5 intrinsically-safe input channels meeting UL913 Sixth Edition
. 4 normally open output relays and 1 SPDT output relay
. Field selectable pump control options
. Monitors float sequencing and sends signal to alarm if out-of-sequence condition occurs
. High and/or low alarm options depending on the number of pumps and settings
. Output contacts for audible alarm
. Meets IEC EMC standards for Electrical Fast Transients (EFT), Electrostatic Discharge (ESD) and Radio Frequency Immunity (RFI)
. DIN rail or surface mountable allows flexibility in panel installation
. User-selectable alternator/non-alternator option
. Non-alternating pump option for emergency or jockey applications
. Pump disable switches make it easy to disable individual pumps when they are out for service or repair
. Adjustable lag pump delay for all pumping modes
. Adjustable delay-on-make/break timer in five-channel relay mode
. Finger-safe terminals meet IEC 61000 safety requirements
| Input Characteristics | |
| Supply Voltage | 120VAC |
| Frequency | 50*/60Hz |
| Functional Characteristics | |
| Probe Sense Voltage | 5vdc continuous |
| Output Characteristics | |
| Output Contact Rating | |
| Pilot Duty | 480VA @ 240VAC, B300 |
| General Purpose | 7A @ 240VAC |
| Relay Contact Life (Electrical) | 100,000 cycles min. @ rated load |
| Relay Contact Life (Mechanical) | 10,000,000 cycles |
| General Characteristics | |
| Temperature Range | -40° to 55°C (-40° to 131°F) |
| Maximum Input Power | 5 W |
| Wire range | 12 to 20 AWG |
| Terminal Torque | 3.5 to 4.5 in.-lbs. (max. 4.5 in.-lbs.) |
| Provides Intrinsically-Safe | |
| Circuits in the | |
| following locations: |
Division 1 and 2 Class I, Groups A,B,C,D; Class II, Groups E,F,G; and Class III |
| Standards Passed | |
| Electrostatic Discharge (ESD) | IEC 61000-4-2, Level 3, 6kV contact, 8kV air |
| Radio Frequency Immunity (RFI) | IEC 61000-4-3, Level 3, 10V/m |
| Fast Transients |
IEC 61000-4-4, Level 3, 4kV input power 2kV inputs/outputs |
| Safety Marks | |
| UL | UL913 Sixth Edition (File #E233355) |
| Dimensions |
H 94.06 mm (3.703”) W 127.64 mm (5.025”) D 59.69 mm (2.350”) |
| Weight | 1.2 lbs. (19.2 oz., 544.31 g) |
| Mounting Method |
35mm DIN rail or Surface Mount (#6 or #8 screws) |