Weidmuller ISPF QB75 SW Insulation Profile

Technical Overview

The Weidmüller ISPF QB75 SW is a specialized insulation profile manufactured from PA 66 plastic, specifically designed to cover QB 75 series cross-connections. This black isolation strip provides critical touch-safe protection for live cross-connection bars within SAK series terminal block assemblies. By snapping directly onto the cross-connector, it ensures compliance with electrical safety standards (IP protection) and prevents accidental short circuits or operator contact with energized components.

Key Features

Designed specifically for Weidmüller QB 75 series cross-connectors
Direct plugged mounting mechanism for tool-free installation
Manufactured from Polyamide 66 (PA 66) for durability
Provides touch-safe protection for live parts
Halogen-free and RoHS compliant material

Technical Specification Matrix

Technical Parameter	Specification
Depth (imperial)	0.224 inch
Height (imperial)	18.307 inch
Width (imperial)	0.098 inch
Material	PA 66
Colour	Black
Operating Temperature Range	-50 °C...100 °C
Installation Advice	Direct mounting
Type of Fixing	Plugged
Flammability Rating	V-2 (UL 94)
Insulating Material Group	I (CTI >= 600)
ROHS Compliance	Compliant
ECLASS 12.0	27-14-11-92
ETIM 9.0	EC002848
Depth	5.7 mm
Height	465 mm
Width	2.5 mm
Net Weight	5.828 g

Industrial Applications

1. Cross-Connection Isolation

Provides electrical isolation for QB 2, QB 3, and QB 4 cross-connectors used in SAK series terminal blocks, preventing arc-over and ensuring defined creepage distances.

Problem Solved

Eliminates risk of phase-to-phase shorts or accidental bridging in high-density terminal rail assemblies.

Electrical isolationCreepage distanceQB cross-connectorsSAK series compatibility

2. Personnel Touch Safety

Acts as a physical dielectric barrier over exposed conductive links, upgrading the assembly to meet finger-safe (IP20) requirements for maintenance personnel.

Problem Solved

Mitigates electric shock hazards in energized control cabinets during routine inspection or maintenance.

Touch protectionDielectric barrierIP20 complianceHazard mitigation

3. Retrofit Safety Integration

Enables the retrofitting of older terminal block installations using external cross-bridges with modern safety covers via simple plugged fixation.

Problem Solved

Updates legacy wiring systems to current safety standards without requiring full component replacement.

Retrofit capabilityPlugged fixationDirect mountingSystem upgrading