CMB-083-12H2N-B-A Equivalent & Substitute Parts

Part Overview

The CMB-083-12H2N-B-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 8A at 250V AC and 32V DC. This single-pole, panel-mount device features push-to-reset actuation and holds Active product status. The breaker is ROHS3 compliant and carries multiple approval agencies including CE, cUL, TUV, UL1077, and UL1500. Substitute parts are identified when equivalent electrical and mechanical parameters are required for applications where the original part is unavailable or when design flexibility permits alternative manufacturers within the same performance specifications.

Substiute Parts

CMB-083-12H2N-B-A

Carling TechnologiesIn Stock: 754CMB-083-12H2N-B-A Datasheet

Current PartRFQ

CBW57-AS-8A

OptiFuseIn Stock: 1229CBW57-AS-8A Datasheet

Parametric EquivalentRFQ

CBW57-EJ-8A

OptiFuseIn Stock: 1039CBW57-EJ-8A Datasheet

Parametric EquivalentRFQ

CBW57-HS-8A

OptiFuseIn Stock: 3510CBW57-HS-8A Datasheet

Parametric EquivalentRFQ

CBW57-PB-8A-5X

OptiFuseIn Stock: 1353CBW57-PB-8A-5X Datasheet

Parametric EquivalentRFQ

CBW57-PS-8A-5X

OptiFuseIn Stock: 1192CBW57-PS-8A-5X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMB-083-12H2N-B-A are qualified based on the following critical parameters that must match or exceed the original specification:

Matching Parameters (Required for Substitution):

• Current Rating: 8A
• Voltage Rating - AC: 250V
• Mounting Type: Panel Mount
• Breaker Type: Thermal
• Actuator Type: Push to Reset
• Number of Poles: 1
• Illumination: None

Allowable Variance:

• Voltage Rating - DC: The original part specifies 32V DC. Substitute parts rated at 50V DC are acceptable as this represents a higher voltage capability and maintains backward compatibility with the original specification.

All identified substitute parts are manufactured by OptiFuse under the CBW57 series. Each substitute maintains identical AC voltage rating, current rating, mounting configuration, and actuation method. The DC voltage rating increase from 32V to 50V in substitute parts provides enhanced capability without compromising the original application requirements. All substitute parts carry Active product status and ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

All five OptiFuse CBW57 series substitute parts meet the electrical and mechanical requirements for direct substitution with the CMB-083-12H2N-B-A. Selection among the substitute options should be based on the following factors:

Compliance and Certification: The original CMB-083-12H2N-B-A carries approvals from CE, cUL, TUV, UL1077, and UL1500. All OptiFuse substitute parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Both the original and substitute parts maintain ROHS3 compliance and are classified as REACH Unaffected.

Product Availability: All substitute parts maintain Active product status. Inventory levels vary across the CBW57 variants: CBW57-HS-8A offers the highest stock level at 3442 units, followed by CBW57-PB-8A-5X at 1332 units, CBW57-AS-8A at 1145 units, CBW57-PS-8A-5X at 1096 units, and CBW57-EJ-8A at 1027 units.

Voltage Capability: The DC voltage rating increase from 32V to 50V in all substitute parts provides enhanced performance margin for applications operating at or near the original specification limits.

Moisture Sensitivity: All OptiFuse CBW57 variants specify Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture-related handling restrictions during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace the CMB-083-12H2N-B-A?

A: Yes. All five CBW57 variants (CBW57-AS-8A, CBW57-EJ-8A, CBW57-HS-8A, CBW57-PB-8A-5X, and CBW57-PS-8A-5X) are direct substitutes. They share identical current rating (8A), AC voltage rating (250V), mounting type (panel mount), breaker type (thermal), actuator type (push to reset), and pole configuration (1-pole). The DC voltage rating increase from 32V to 50V represents enhanced capability.

Q: What is the difference between the five OptiFuse substitute part numbers?

A: The five CBW57 variants differ only in their connector or terminal configuration designations (AS, EJ, HS, PB-5X, PS-5X). All variants share identical electrical specifications, thermal characteristics, and approval certifications. Selection should be based on connector compatibility with the application's wiring or terminal requirements.

Q: Are the substitute parts certified to the same standards as the original?

A: Both the original CMB-083-12H2N-B-A and all OptiFuse CBW57 substitutes carry UL 1077 and UL 1500 certifications. The original part includes CE and TUV approvals, while the OptiFuse parts carry cURus and SAE J1171 certifications. All parts are ROHS3 compliant and REACH Unaffected.

Q: Does the higher DC voltage rating (50V vs. 32V) affect compatibility?

A: No. The 50V DC rating in OptiFuse parts represents a higher voltage capability and is fully compatible with applications designed for 32V DC operation. The substitute parts will function correctly in any application where the original 32V DC rated part was specified.

Q: What packaging format are the substitute parts supplied in?

A: All five OptiFuse CBW57 substitute parts are supplied in Bulk packaging, consistent with the original CMB-083-12H2N-B-A specification.

Q: Are there any moisture sensitivity concerns with the substitute parts?

A: No. All OptiFuse CBW57 variants specify Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture-related storage or handling restrictions. Standard component handling practices apply.