Equivalent & Substitute Parts for 10CJ Fuse Cartridge

Part Overview

The 10CJ is a fast-blow cartridge fuse manufactured by Eaton - Bussmann Electrical Division, rated for 10A at 600 VAC / 250 VDC. This component is classified as obsolete, making identification of equivalent substitute parts essential for system maintenance and component replacement in existing installations. The fuse is designed for use in electrical and industrial applications requiring a cartridge-style holder-mounted fuse with 200kA breaking capacity at rated voltage.

Substiute Parts

10CJ

Eaton - Bussmann Electrical DivisionIn Stock: 115310CJ Datasheet

Current PartRFQ

KLSR010.T

Littelfuse Inc.In Stock: 924KLSR010.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 10CJ fuse cartridge is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 10A (exact match required)
• Voltage Rating: 600 VAC / 250 VDC (exact match required)
• Response Time: Fast Blow (exact match required)
• Breaking Capacity: 200kA minimum at rated voltage
• Fuse Type: Cartridge (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Physical Dimensions: Compatible with standard cartridge fuse holders

The KLSR010.T from Littelfuse Inc. meets all electrical equivalence criteria. However, physical dimension differences exist and must be evaluated for holder compatibility.

Parameter Comparison

Engineering Selection Recommendations

The KLSR010.T cartridge fuse from Littelfuse Inc. provides electrical equivalence to the obsolete 10CJ. Both components share identical current ratings (10A), voltage ratings (600 VAC / 250 VDC), response characteristics (Fast Blow), and breaking capacity (200kA). The KLSR010.T carries active product status with expanded regulatory approvals (CE, CSA, UL) compared to the 10CJ (CSA only).

The primary consideration for substitution is physical dimension compatibility. The KLSR010.T measures 0.811" Dia x 5.000" L, while the 10CJ measures 0.811" Dia x 2.244" L. The diameter remains identical, but the length differs significantly. Confirmation that the existing fuse holder accommodates the longer KLSR010.T cartridge is required before substitution.

The KLSR010.T is classified as RK1, providing additional specification clarity for industrial applications. This component is currently in active production with 836 units available in stock.

Frequently Asked Questions (FAQ)

Q: Can the KLSR010.T directly replace the 10CJ in all applications?

A: Electrical compatibility is confirmed across all rated parameters. Physical compatibility depends on the fuse holder design. The KLSR010.T is longer (5.000" vs 2.244") and must fit within the existing holder cavity. Holder specifications should be consulted before substitution.

Q: What is the difference in breaking capacity between the two fuses?

A: Both fuses provide 200kA breaking capacity at AC rated voltage. The KLSR010.T specifies 20kA DC breaking capacity, while the 10CJ does not provide a separate DC specification. For DC applications, the KLSR010.T offers defined performance characteristics.

Q: Why is the 10CJ listed as obsolete?

A: The 10CJ is no longer manufactured by Eaton - Bussmann Electrical Division. The KLSR010.T from Littelfuse Inc. represents the active equivalent for new installations and replacements.

Q: Are there regulatory compliance differences?

A: The 10CJ carries CSA approval. The KLSR010.T carries CE, CSA, and UL approvals, providing broader regulatory acceptance. Both are REACH Unaffected and classified under ECCN EAR99.

Q: What does RK1 classification mean for the KLSR010.T?

A: RK1 is a fuse class designation indicating the component meets specific performance and coordination standards for industrial applications. This classification provides additional specification clarity for system design and protection coordination.