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Littelfuse ISS-100 - 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.

Littelfuse ISS-100 The ISS-100 switches are UL 913 listed as an associated apparatus for interfacing…

Alternate Item Number: ISS-100

UPC: 079458994247


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Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Littelfuse ISS-100 is a UL 913 Sixth Edition listed intrinsically safe switch designed as associated apparatus for interfacing between hazardous and non-hazardous areas. It is a single-channel, 1-pole relay for critical applications in explosive atmospheres, including oil and gas, chemical processing, pharmaceutical, and food processing facilities. The ISS-100 must be installed in non-hazardous areas, serving as a secure bridge between hazardous zones (Class I, II, III; Groups A-G) and control systems. Specifications: - Supply voltage: 90-120VAC - Continuous probe sense voltage: 5VDC - Isolated output relay: 8A @120VAC general purpose or 180VA @120VAC pilot duty - Mechanical relay life: 10,000,000 cycles; minimum 100,000 electrical cycles at rated load - Installation options: 35mm DIN rail mounting or surface mounting with #6 or #8 screws - Temperature range: -20°C to 55°C (-4°F to 131°F) - Maximum input power: 1.5W - Entity parameters: Voc=16.8V, Isc=1.2mA, La=100mH, Ca=0.39µF - LED status indicator for relay engagement - Wire range: 12 to 20 AWG - Terminal torque: 3.5 to 4.5 in.-lbs - Dimensions: 88.9 mm (H) x 52.93 mm (W) x 59.69 mm (D) - Weight: 0.5 lb (226.8 g)
  • UL 913 Sixth Edition listed (File #E233355) for hazardous area safety
  • Single-channel, 1-pole relay with 8A @120VAC general purpose or 180VA pilot duty output
  • Compact design with 35mm DIN rail or surface mounting (#6 or #8 screws)
  • LED status indicator for visual relay engagement confirmation
  • Compact design supports DIN rail or surface mounting (35mm rail or #6/#8 screws)

Specifications

Brand Name
Littelfuse
Mounting
DIN rail or Surface mount (#6 or #8 screws)
Number Of Poles
DIN rail or Surface mount (#6 or #8 screws)
Operating Temperature
-4 to 158
Operating Temperature, Maximum
158
Operating Temperature, Minimum
-4
Series
ISS
Standard
UL
Sub Brand
Symcom
Package Dimensions (L x W x H)
2.35 IN x 2.08 IN x 3.5 IN
Package Dimensions (L x W x H)
59.7 mm x 52.9 mm x 88.9 mm
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Frequently Asked Questions

What is the maximum wire size for the ISS-100 terminals?

The ISS-100 supports wire sizes from 12 to 20 AWG for terminal connections.

What is the relay contact life of the ISS-100?

The mechanical relay life is 10,000,000 cycles, with a minimum of 100,000 electrical cycles at rated load.

What is the probe sense voltage of the ISS-100?

The ISS-100 provides a continuous 5VDC probe sense voltage for interfacing with hazardous area devices.

What is the operating temperature range for the ISS-100?

The ISS-100 operates reliably from -20°C to 55°C (-4°F to 131°F).

What is the entity parameter Voc for the ISS-100?

The entity parameter Voc for the ISS-100 is 16.8V.

What is the maximum input power for the ISS-100?

The maximum input power for the ISS-100 is 1.5W.

What is the terminal torque requirement for the ISS-100?

The terminal torque requirement for the ISS-100 is 3.5 to 4.5 in.-lbs, with a maximum of 4.5 in.-lbs.

What is the output contact rating for pilot duty?

The output contact rating for pilot duty is 180VA @120VAC, C300.

What hazardous area classifications does the ISS-100 support?

The ISS-100 supports Class I, II, III; Groups A-G in Division 1 and 2 hazardous locations as per UL 913.

What standards does the ISS-100 comply with?

The ISS-100 complies with IEC 61000-4-2 (ESD Level 3), IEC 61000-4-3 (RFI Level 3), and IEC 61000-4-4 (Fast Transients Level 3).

Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.