Eaton BK/HTB-34M-R Cartridge Fuse Holder Equivalent & Substitute Parts

Part Overview

The Eaton BK/HTB-34M-R is a panel-mounted cartridge fuse holder rated for 16 A at 250V, designed for 5mm x 20mm cartridge fuses with quick connect termination. This component is Active in product status and maintains full RoHS3 compliance. Equivalent and substitute parts are identified when design requirements permit variations in current rating, voltage rating, or termination style while maintaining compatibility with the 5mm x 20mm cartridge fuse form factor and panel mount configuration.

Substiute Parts

BK/HTB-34M-R

Eaton - Electronics DivisionIn Stock: 936BK/HTB-34M-R Datasheet

Current PartRFQ

BK2-HTC-607M

Eaton - Electronics DivisionIn Stock: 3037BK2-HTC-607M Datasheet

SimilarRFQ

BK2-HTC-609M

Eaton - Electronics DivisionIn Stock: 2889BK2-HTC-609M Datasheet

SimilarRFQ

03450621H

Littelfuse Inc.In Stock: 238903450621H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/HTB-34M-R are grouped based on the following substitution criteria:

Critical Parameters (Must Match):

• Fuse Size: 5mm x 20mm cartridge form factor
• Mounting Type: Panel Mount configuration
• Fuse Type: Cartridge
• Number of Circuits: Single circuit

Variable Parameters (May Differ):

• Current Rating: 16 A (main part) vs. 10 A or 20 A (substitutes)
• Voltage Rating: 250V (main part) vs. 600V (substitute)
• Termination Style: Quick Connect vs. Solder Lug
• Manufacturer: Eaton vs. Littelfuse

Substitution is valid when the application requirements permit operation at different current or voltage ratings, and when the termination method is compatible with the circuit board or panel design.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Same Electrical Specifications):

The Littelfuse 03450621H provides the closest electrical match when higher voltage rating (600V vs. 250V) is acceptable for the application. Both the BK/HTB-34M-R and 03450621H use identical quick connect termination and accommodate 5mm x 20mm cartridge fuses. The 03450621H operates at 20 A, which exceeds the 16 A rating of the main part; this substitution is valid only when the circuit design permits higher current capacity. Both parts maintain RoHS3 compliance and REACH unaffected status.

For Functional Substitution (Different Electrical Specifications):

The Eaton BK2-HTC-607M and BK2-HTC-609M are functionally equivalent when circuit requirements permit 10 A operation at 250V. These parts differ in termination style (solder lug vs. quick connect) and fuse size specification (5mm diameter only, not length specified). Substitution requires compatible circuit board or panel design to accommodate solder lug termination. Both maintain RoHS compliance and REACH unaffected status. Inventory availability is significantly higher for these alternatives (2935 and 2876 units respectively).

Compliance Considerations:

All substitute parts maintain regulatory compliance with RoHS and REACH requirements. The BK/HTB-34M-R and 03450621H are RoHS3 compliant, while BK2-HTC-607M and BK2-HTC-609M are RoHS compliant. All parts carry REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can the BK2-HTC-607M or BK2-HTC-609M replace the BK/HTB-34M-R in all applications?

A: No. These Eaton HTC series holders are rated for 10 A at 250V, compared to the HTB series 16 A rating. Substitution is valid only when the circuit design operates at 10 A or below. Additionally, these parts use solder lug termination instead of quick connect, requiring compatible circuit board design.

Q: Is the Littelfuse 03450621H a direct replacement for the BK/HTB-34M-R?

A: The 03450621H shares the same fuse size (5mm x 20mm), mounting type (panel mount), and termination style (quick connect). However, it is rated for 20 A at 600V, compared to 16 A at 250V. This substitution is valid when the application permits higher voltage and current ratings. Both parts are RoHS3 compliant.

Q: What is the primary difference between the BK2-HTC-607M and BK2-HTC-609M?

A: Both parts are identical in electrical specifications (10 A, 250V), mounting type, and fuse compatibility. The part numbers distinguish them in the Eaton product line, but they are functionally equivalent. Inventory levels differ slightly (2935 vs. 2876 units).

Q: Can I use a substitute part with a lower current rating than the original?

A: Yes, if the circuit design operates below the substitute part's current rating. For example, a 10 A rated holder (BK2-HTC-607M or BK2-HTC-609M) can replace a 16 A rated holder (BK/HTB-34M-R) in circuits drawing 10 A or less. The fuse rating must also be compatible with the circuit protection requirements.

Q: Are all substitute parts panel-mountable?

A: Yes. All listed substitute parts are panel mount configuration, matching the BK/HTB-34M-R mounting type. Termination style varies (quick connect vs. solder lug), which affects installation method but not mounting location.

Q: What is the significance of the fuse size specification difference between parts?

A: The BK/HTB-34M-R and 03450621H specify 5mm x 20mm (diameter x length), while BK2-HTC-607M and BK2-HTC-609M specify 5mm diameter only. All are compatible with standard 5mm x 20mm cartridge fuses. The length specification in the main part and 03450621H provides complete dimensional clarity for mechanical design.