Littelfuse ISS-105-ISO Intrinsically Safe Relay Product Description
The ISS-105 is a “smart” five-channel intrinsically safe relay and pump controller. The ISS-105 can be configured for a wide variety of applications including alternating or non-alternating duplex, duplex separate pump stop (SPS), triplex and quadplex applications. It can be set up for pump-up or pump-down applications or can be used as a five-channel relay.
The ISS-105 has a long list of features that are needed for multiple pump applications. The ISS-105 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.
Littelfuse ISS-105-ISO Intrinsically Safe Relay Typical Applications
Littelfuse ISS-105-ISO Intrinsically Safe Relay Features
- Five Intrinsically Safe Input Channels Meeting UL 913 Sixth Edition
- Four Normally Open Output Relays & One 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
- 5-Year Warranty
- Made in the USA
Littelfuse ISS-105-ISO Intrinsically Safe Relay Specifications
Line Voltage . . . . . . . . . . . . 120 VAC
Frequency . . . . . . . . . . . . 50*/60Hz
Probe Sense Voltage . . . . . . . . . 5vdc continuous
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
Temperature Range . . . . . . . . . . . . . . . . . . . . . -20° to 55°C (-4° to 131°F)
Maximum Input Power . . . . . . . . . . . . . . . . . . . . . 5 W
Wire Range . . . . . . . . . . . . 12 to 20 AWG
Recommended 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
- . . . . . . . . . . . . . . . . . . . . . Class III
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
Safety Mark
- UL . . . . . . . . . . . . . . . . . . . . . UL913 Sixth Edition (File #E233355)
Weight . . . . . . . . . . . . . . . . . . . . . . . . 19.2 oz.
Mounting Method
. . . . . . . . . . . 35mm DIN rail or Surface Mount (#6 or #8 screws)
*Note: 50Hz will increase all delay timers by 20%.
WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
SymCom Warranty
SymCom Limited Warranty
Terms and Conditions of Sale
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