KLM-3/10 Equivalent & Substitute Parts

Part Overview

The KLM-3/10 is a 300mA fast-blow fuse cartridge manufactured by Eaton - Bussmann Electrical Division, rated for 600 VAC and 600 VDC operation. This component is designed for use in electrical and industrial applications where overcurrent protection is required in holder-based installations. The part maintains active product status with 1043 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when supply chain considerations necessitate qualified alternatives.

Substiute Parts

KLM-3/10

Eaton - Bussmann Electrical DivisionIn Stock: 1088KLM-3/10 Datasheet

Current PartRFQ

KLKD.300T

Littelfuse Inc.In Stock: 1162KLKD.300T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KLM-3/10 is determined by strict equivalence across the following critical parameters:

• Current Rating: 300mA (exact match required)
• Voltage Rating: 600 VAC and 600 VDC (both ratings must be met)
• Fuse Type: Cartridge with holder-based mounting
• Response Time: Fast Blow characteristic
• Physical Dimensions: 10mm x 38mm cartridge form factor
• Breaking Capacity: 100kA AC and 50kA DC minimum
• Regulatory Compliance: CE, CSA, and UL certifications

The KLKD.300T from Littelfuse Inc. meets all specified parameters and is classified as a direct equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the KLM-3/10 and KLKD.300T maintain active product status and carry equivalent regulatory certifications (CE, CSA, UL). The KLKD.300T is ROHS3 compliant, which exceeds the RoHS compliance level of the primary part. Physical dimensions are equivalent within manufacturing tolerance (10.30mm vs. 10.31mm diameter). Both components satisfy the 100kA AC and 50kA DC breaking capacity requirements for their rated voltage and current specifications. Selection between these parts may be based on availability, packaging preference (Bulk vs. Box), or supply chain requirements, as electrical and mechanical performance characteristics are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the KLKD.300T be used as a direct replacement for the KLM-3/10?

A: Yes. The KLKD.300T meets all critical electrical parameters: 300mA current rating, 600 VAC/VDC voltage rating, fast-blow response, and equivalent breaking capacity. Physical dimensions are equivalent, and both parts carry CE, CSA, and UL certifications.

Q: Are there dimensional differences between these cartridges?

A: Dimensions are functionally equivalent. The KLM-3/10 is specified at 10.30mm diameter, while the KLKD.300T is 10.31mm diameter—a difference within standard manufacturing tolerance for 5AG/10mm x 38mm midget cartridge form factors. Both fit standard cartridge holders designed for this form factor.

Q: What is the significance of the different RoHS compliance levels?

A: The KLM-3/10 is RoHS Compliant, while the KLKD.300T is ROHS3 Compliant. ROHS3 represents a more recent compliance standard. Both meet environmental and hazardous substance restrictions applicable to their respective manufacturing periods. This difference does not affect electrical or mechanical performance.

Q: Do both parts require the same holder type?

A: Yes. Both the KLM-3/10 and KLKD.300T are cartridge fuses requiring a holder for installation. They are compatible with standard 5AG/10mm x 38mm cartridge holders.

Q: What is the breaking capacity significance?

A: Breaking capacity (100kA AC, 50kA DC) defines the maximum fault current the fuse can safely interrupt at its rated voltage without rupturing or creating a hazard. Both parts are rated identically, ensuring equivalent protection performance in the circuit.