Protection Relays

Intrinsically Safe Relays

www.littelfuse.com/iss100

Rev: 1-A-062116

ISS-100

Description

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.

Features & Beneﬁts

FEATURES BENEFITS

Finger-safe terminals Meets IEC 61000 safety requirements

Compact design for DIN

rail or surface mount

Allows ﬂexiblility in panel installation

LED Status Indicator Visual indication of relay engagement

Isolated output relay Allows connection to PLC or control voltage

Speciﬁcations

Input Characteristics

Supply Voltage 90-120VAC

Functional Characteristics

Probe Sense Voltage 5vdc continuous

Output Characteristics

Output Contact Rating

Pilot Duty 180VA @120VAC, C300

General Purpose 8A @120VAC

Relay Contact Life (Electrical) 100,000 cycles min. @ rated load

Relay Contact Life (Mechanical) 10,000,000 cycles

General Characteristics

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;

and Class III

Entity Parameters V

= 16.8V Po=Voc*Isc

= 1.2mA 4

= 100mH

= 0.39uF

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

Safety Mark

UL UL913 Sixth Edition (File #E233355)

Dimensions H 88.9 mm (3.5”); W 52.93 mm (2.08”);

D 59.69 mm (2.35”)

Weight 0.5 lb. (8 oz., 226.8 g)

Mounting Method 35mm DIN rail or Surface Mount

(#6 or #8 screws)

Single-Channel Intrinsically Safe Switch

Wiring Diagram

115 VAC

INPUT

ISS-100

OUTPUT ENERGIZED

LOAD

See Notes 1 & 2

See Note 3

1. Maximum distance between unit and switch

contact is 10,000 feet.

2. All non-intrinsically safe wiring shall be separated

from intrinsically safe wiring. Description of

special wiring methods can be found in the

National Electrical Code ANSI/NFPA 70, Article

504 Intrinsically Safe Systems. Check your state

and local codes for additional requirements.

3. All switch contacts shall be non-energy storing,

containing no inductance or capacitance.