Littelfuse intrinsically safe relays are UL 913 listed as associated apparatuses for interfacing between hazardous and nonhazardous areas. These high-quality products protect hazardous location circuits and are core components for intrinsically safe applications. The ISS-105 series is designed as a "smart" five-channel relay and pump controller, which can be configured for pump-up or pump-down applications. The ISS-102 offers two LEDs for visual indication of relay engagement. These intrinsically safe relays are offered with single-, two-, three-, four-, or five-channel options.

 

Features

• Input voltages from 90 V ac to 120 V ac
• Maximum input power tolerances up to 2 W
• Probe sense voltages of 5 V dc continuous and 5 V dc pulsed
• Pilot duty power ratings of 180 VA at 120 V ac
• Minimum electrical contact life of 100 000 cycles at rated loads
• Mechanical contact life of 10 million cycles
• Operate at temperatures ranging from 20 °C to +55 °C
• Meet IEC 61000 safety requirements
• UL Listed

 

Benifits

• DIN rail-mounted and surface-mounted versions available
• LED status indicators
• Small size and low weight

Model	Image	Description
ISS 100 Series		The ISS-100 switches are UL 913 listed as an associated apparatus for interfacing between hazardous and non-hazardous areas. These units must be installed in a non-hazardous area.
ISS 101 Series		The ISS-101 switches are UL 913 listed as an associated apparatus for interfacing between hazardous and non-hazardous areas. These units must be installed in a non-hazardous area.
ISS 102 Series		The ISS-102 is a two-channel, intrinsically-safe switch designed for multiple uses including a pump-up/pump-down (latching) controller or two-channel switch. Two LEDs indicate the state of the intrinsically-safe inputs and output relays and user-selectable options are available including a variable resistance threshold for float inputs. The ISS-102 enclosure is surface or DIN rail mountable.
ISS 105 Series		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.