Siemens Sitor fuse switch, 3-pole, 10 x 38, 690VAC, up to 32A

Product Overview

The Siemens 3NC1093 is a high-performance SITOR fuse switch disconnector designed for 10 x 38mm fuses with superior semiconductor protection capabilities. This 3-pole switch disconnector accommodates fuses up to 32A and operates at 690V AC, providing reliable switching and protection for demanding industrial applications. As part of the SENTRON protective component line, this device combines switching functionality with advanced fuse protection technology.

Key Features:

• Current capacity: Up to 32A with 3-pole configuration
• Operating voltage: 690V AC for high-power applications
• Fuse compatibility: 10 x 38mm SITOR cylindrical fuses
• Switch disconnector design provides both switching and isolation functions
• Front mounting configuration for easy installation and operation
• Safety switch version for enhanced operational security
• Conditioned rated short-circuit current: 50kA

Applications:

Specifically designed for protecting power semiconductors in frequency converters, UPS systems, and soft-starters for motors. Essential for applications requiring reliable switching and protection of semiconductor devices from short-circuit effects in industrial automation and power electronics systems. The area of application includes frequency converters with fuses in the input circuit and DC intermediate circuits.

Technical Advantages:

• Extremely fast-acting switch-off characteristics compared to conventional LV HRC fuses
• Power semiconductors are reliably protected even during short-circuit conditions
• Siemens quality standard ensures excellent characteristic curve accuracy
• Global approvals (IEC, UL, CCC) enable worldwide application
• Suitable for installation in LV HRC fuse bases and switch disconnectors
• Effective protection for personnel, equipment, and systems through reliable shutdown
• Superior performance in frequency converter and UPS system applications

SENTRON System Integration:

As an important element of the SENTRON protective component line for electronic installations, the SITOR fuse system from Siemens provides effective protection for personnel, equipment and plants with reliable shutdown in the event of an overload or short circuit. The system offers comprehensive protection solutions for modern industrial and commercial electrical installations.

Installation Features:

• Front mounting design for accessible operation and maintenance
• Screw connection terminals for secure electrical connections
• Wire capacity: 1.5 to 25 sq-mm for solid and stranded wire
• Height: 58mm, Depth: 85mm for compact installation
• Position control element on front side for easy operation
• Safety switch version with enhanced protection features

Technical Specifications:

• Maximum rated operation voltage (Ue AC): 690V
• Rated permanent current (Iu): 32A
• Conditioned rated short-circuit current (Iq): 50kA
• Number of poles: 3
• Fuse dimensions: 10 x 38mm
• Connection type: Screw connection for main circuit
• Degree of protection: Enhanced front side protection

Standards Compliance:

Approved according to IEC and UL standards with CCC certification for global use. Part of the SENTRON protective component line ensuring compliance with international safety and performance standards for semiconductor protection applications and switching operations.

Physical Specifications:

• Net weight: 0.155 kg
• Packaging dimensions: 65 x 80 x 53 mm
• Country of origin: Germany
• EAN: 4011209570320
• UPC: 662643167528

Environmental Compliance:

RoHS compliant since July 1, 2006. WEEE (2012/19/EU) take-back obligation applies. Standard product classification allows for returns within guidelines/period.

Shipping Details:

• Minimum order quantity: 4 pieces
• Product lifecycle: PM300 Active Product

Download existing graphical data for this product:

• Official Siemens Datasheet (PDF)
• Official Siemens Product Page
• Siemens Technical Support Portal
• Siemens SENTRON Product Family
• Siemens Download Center