BPM385UL Equivalent & Substitute Parts

Part Overview

The BPM385UL is a 240 V, 40 kA Transient Voltage Suppressor (TVS) varistor module manufactured by Eaton - Bussmann Electrical Division. This single-circuit DIN Rail module with plug-in terminal block is designed for transient overvoltage protection in industrial and electrical distribution applications. The product is currently obsolete, making identification of equivalent and substitute parts essential for system maintenance, repair, and component replacement in existing installations.

Substiute Parts

BPM385UL

Eaton - Bussmann Electrical DivisionIn Stock: 851BPM385UL Datasheet

Current PartRFQ

BPMA385UL

Eaton - Bussmann Electrical DivisionIn Stock: 1157BPMA385UL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BPM385UL is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Varistor voltage rating and maximum AC voltage must meet or exceed the original specification to ensure adequate overvoltage protection
• Surge current capacity must be sufficient to handle transient events
• Operating temperature range must accommodate the installation environment

Mechanical Compatibility Criteria:

• Mounting type must be DIN Rail to ensure physical compatibility with existing installations
• Terminal block configuration must support the circuit requirements of the application
• Package form factor must fit within the designated space allocation

Regulatory & Compliance Criteria:

• ECCN and HTSUS classifications must align for import/export and procurement purposes
• Moisture sensitivity level should be compatible with storage and handling requirements

The BPMA385UL is identified as a substitute part based on shared manufacturer origin, identical mounting type (DIN Rail), compatible electrical ratings, and equivalent regulatory classification (ECCN: EAR99, HTSUS: 8533.40.4000).

Parameter Comparison

Engineering Selection Recommendations

BPMA385UL as Substitute:

The BPMA385UL is an active product from the same manufacturer with identical regulatory classification. Key considerations for selection:

• The substitute provides higher maximum AC voltage rating (770 V vs. 385 V), offering enhanced overvoltage protection margin
• The substitute features three circuits compared to the original single circuit, requiring verification that the application can accommodate or isolate unused circuits
• Operating temperature range is slightly extended (-35°C to 85°C vs. -40°C to 80°C), suitable for most industrial environments
• DIN Rail mounting compatibility ensures physical installation feasibility
• Active product status ensures ongoing availability and supply chain continuity

Selection of the BPMA385UL is appropriate when circuit count and higher voltage rating are compatible with the system design. If single-circuit operation is mandatory, alternative single-circuit varistor modules from the same manufacturer should be evaluated.

Frequently Asked Questions (FAQ)

Q: Why is the BPM385UL obsolete and what does this mean for procurement?

A: Obsolete products are no longer manufactured by the original supplier. Existing inventory may be available through authorized distributors, but long-term supply cannot be guaranteed. Identifying active substitute parts ensures system maintainability and reduces future procurement risk.

Q: Can the BPMA385UL directly replace the BPM385UL in my installation?

A: Direct replacement requires verification of three factors: (1) the application can accommodate a three-circuit module instead of single-circuit, (2) the higher maximum AC voltage rating (770 V) is compatible with system design, and (3) the DIN Rail mounting space is sufficient for the substitute module dimensions.

Q: What is the significance of the higher voltage rating in the BPMA385UL?

A: The 770 V maximum AC rating provides greater protection margin against transient overvoltages compared to the 385 V rating of the original part. This is beneficial for system reliability but requires confirmation that the substitute does not introduce incompatibility with voltage-sensitive downstream components.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts share identical ECCN (EAR99) and HTSUS (8533.40.4000) classifications, indicating equivalent regulatory treatment for import, export, and procurement purposes.

Q: What should I verify before ordering the BPMA385UL as a replacement?

A: Confirm (1) physical dimensions and DIN Rail mounting compatibility, (2) terminal block connection type matches your installation, (3) the three-circuit configuration does not conflict with your application requirements, and (4) the higher voltage rating aligns with system design parameters.