Littelfuse ISS-101 Intrinsically Safe Switch Product Description

The Model ISS-101, a plug-in style isolated switch, is UL 913* listed as an associated apparatus for interfacing between hazardous and non-hazardous areas. The ISS-101 must be installed in a non-hazardous area. 

Littelfuse ISS-101 Intrinsically Safe Switch Typical Applications

• Isolated Switch

Littelfuse ISS-101 Intrinsically Safe Switch Features

• UL 913 Listed.*
• Compact Design
• Finger Safe Terminals.
• DIN Rail or Surface Mountable.
• LED State Indicator
• Isolated Output Relay for PLC or Control Voltage.
• *Meets all New Requirements for UL 913 Sixth Edition, August 8, 2002!
• 5-Year Warranty
• Made in the USA

Littelfuse ISS-101 Intrinsically Safe Switch Specifications

Supply Voltage . . . . . . . . . . . . 90-120 VAC

Probe Sense Voltage . . . . . . . . . 5VDC continuous

Output Contact Rating

• . . . . . . . . . . . . . . . . . . . . . .180VA @120VAC, C300 Pilot Duty
• . . . . . . . . . . . . . . . . . . . . . . 8A @120VAC General Purpose
• 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 . . . . . . . . . . . . . . . . . . . . . 1.5 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
• . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . 8 oz.

Mounting Method . . . . . . . . . . . DIN rail or surface mount (plug into OT08PC socket)

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Littelfuse Intrinsically Safe Switch Resources

Littelfuse ISS-101 Product Specifications

Littelfuse ISS-101 Installation Bulletin

Littelfuse ISS-101 Engineering Bulletin