Overview
The Allen-Bradley 194R-NJ030P3 Series B is a rotary fused disconnect switch designed for reliable load isolation and short-circuit protection in industrial control applications. This 30-ampere-rated unit combines manual disconnection capability with integral fuse protection, reducing panel footprint while maintaining safety compliance. The Series B model supports AC and DC systems up to 600V AC and 250V DC, making it suitable for a wide range of motor control, machinery automation, and power distribution scenarios.
Key Features
- Fused Configuration: Integral fuse carriers eliminate the need for separate fuse blocks, conserving panel space and simplifying circuit protection
- Rotary Operation: Smooth, intuitive rotary handle with clear visual position indication for operator safety and reliability
- 4-Pole Design: Accommodates multi-phase and control circuit isolation requirements
- Dual Voltage Rating: 600V AC / 250V DC compatibility covers both alternating and direct current applications
- Extension Shaft Option: Flexible door-mounted installation with extension shaft available for front-panel access
- UL/CSA Certified: UL Class CC & J and CSA HRCI-J listings ensure compliance with North American electrical codes
Technical Specifications
- Current Rating: 30 Amps
- Voltage Rating: 600 VAC / 250 VDC
- Number of Poles: 4
- Switch Style: Rotary (manual), fused configuration
- Enclosure Type: Open Style
- Mounting: DIN Rail / Panel Mount
- Operating Temperature Range: -20 to +40°C
- Weight: 1.74 lbs
- Certifications: UL Class CC & J, CSA HRCI-J
- Fusible: Yes (integral fuse carriers)
- Series: 194R (Rockwell Automation)
Typical Applications
The Allen-Bradley 194R-NJ030P3 serves critical isolation and protection functions in:
- Industrial motor control centers and machinery panels
- Power distribution equipment and branch circuit protection
- Maintenance and safety lockout/tagout (LOTO) procedures
- Commercial HVAC and automation system control
- General industrial equipment requiring manual disconnection and short-circuit protection
Compatibility & Replacements
Compatible With
- Allen-Bradley 194R series extension shafts and handle kits
- Class CC & J fuses (standard U.S. industrial ratings)
- DIN rail mounting systems
- Panel enclosures rated for 600V AC operation
- Standard three and four-phase AC distribution systems
- 24V DC control circuits and auxiliary power supplies
Replaces / Drop-In Replacement For
The 194R-NJ030P3 Series B directly replaces earlier versions and similar 30A fused disconnect switches in the 194R family. For specific model cross-reference, consult your system documentation or contact our technical team to confirm compatibility with your existing equipment.
Works With
- Allen-Bradley motor control centers (MCCs) and panel assemblies
- IEC and NEMA-rated disconnecting means applications
- Industrial automation and machinery control systems
- Standard fused disconnect switch installation practices per NEC Article 430
- Rockwell Automation control system documentation and manuals
