Overview
The Bussmann NOS-150 is a Class H non-current-limiting, general-purpose one-time fuse designed for industrial electrical systems and automation control circuits. With a 150A current rating, 600VAC voltage capability, and 10kA interrupting capacity, the NOS-150 provides reliable short-circuit and overload protection in applications where available fault current does not exceed 10,000 amps RMS.
Key Features
- One-time fuse design for general-purpose protection and cost-effectiveness
- 10,000 AIC RMS interrupting rating at 600VAC
- Fast-acting response with 9-5/8 inch length and 1-13/16 inch diameter blade body
- Class H (K) UL classification per JDDZ standard
- Non-current-limiting cartridge style for standard fuse block compatibility
- CSA certified, Class 1421-01
Technical Specifications
- Current Rating: 150A
- Voltage Rating: 600VAC
- Interrupting Capacity: 10kA at 600VAC
- Fuse Type: Class H, one-time (non-renewable)
- Body Style: Cartridge, blade-type
- Length: 9-5/8 inches (1.84″ diameter)
- Diameter: 1-13/16 inches
- Speed: Fast-acting
- Rejection Type: Non-indicating/nonrejection
- Series: NOS (Bussmann general-purpose)
Typical Applications
The NOS-150 is commonly used in:
- Industrial control panels and distribution systems
- Motor branch circuits up to 150A
- Power transmission and equipment protection
- Factory automation and machinery circuits
- General-purpose electrical switchgear and MCC (Motor Control Center) applications
- Any low-voltage industrial circuit requiring non-current-limiting protection
Compatibility & Replacements
Compatible With
- Fuse block series 6HKRFB, H600, HM600, HM601, HM602, HM604
- Standard Class H cartridge fuse blocks rated 600VAC
- Any industrial electrical panel accepting Class H blade cartridge fuses
- Electrical systems with available fault current below 10kA RMS
Replaces / Drop-In Replacement For
- Eaton NOS-150 and Cooper Bussmann NOS-150
- Littelfuse NLS-150 (equivalent Class H 150A fuse)
- Mersen OTS-150 (equivalent cartridge fuse)
- Other Class H 150A 600VAC general-purpose cartridge fuses with matching dimensions
Works With
- UL Class H (JDDZ) certified electrical systems
- CSA Class 1421-01 listed circuits
- Standard 600VAC industrial control equipment and switchgear
- Traditional (non-current-limiting) fuse-based distribution systems
