CLB-033-12CNN-R-A/03 Equivalent & Substitute Parts

Part Overview

The CLB-033-12CNN-R-A/03 is a thermal circuit breaker manufactured by Carling Technologies, rated for 3A at 250V AC and 32V DC. This single-pole, panel-mount device features push-to-reset actuation and holds active product status with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards. The device is ROHS3 compliant and REACH unaffected. Substitute parts are identified when equivalent electrical and mechanical parameters are required for applications where the original part number is unavailable or when design flexibility permits alternative qualified sources.

Substiute Parts

CLB-033-12CNN-R-A/03

Carling TechnologiesIn Stock: 872CLB-033-12CNN-R-A/03 Datasheet

Current PartRFQ

CBW57-EJ-3A

OptiFuseIn Stock: 1310CBW57-EJ-3A Datasheet

Parametric EquivalentRFQ

CBW57-EL4-3A

OptiFuseIn Stock: 1370CBW57-EL4-3A Datasheet

Parametric EquivalentRFQ

CBW57-ES-3A

OptiFuseIn Stock: 1344CBW57-ES-3A Datasheet

Parametric EquivalentRFQ

CBW57-PF-3A-5X

OptiFuseIn Stock: 938CBW57-PF-3A-5X Datasheet

Parametric EquivalentRFQ

CBW57-PS-3A-1X

OptiFuseIn Stock: 1225CBW57-PS-3A-1X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CLB-033-12CNN-R-A/03 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Current Rating: 3A (exact match required)
• Voltage Rating - AC: 250V (exact match required)
• Mounting Type: Panel Mount (exact match required)
• Actuator Type: Push to Reset (exact match required)
• Number of Poles: 1 (exact match required)
• Breaker Type: Thermal (exact match required)

Allowable Variation:

• Voltage Rating - DC: The main 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 32V DC requirement.

All substitute parts are manufactured by OptiFuse under the CBW57 series and maintain ROHS3 compliance, active product status, and equivalent approval agency certifications (cURus, UL 1077, UL 1500).

Parameter Comparison

Engineering Selection Recommendations

All five OptiFuse CBW57 series substitute parts maintain active product status and ROHS3 compliance equivalent to the CLB-033-12CNN-R-A/03. The substitute parts carry UL 1077 and UL 1500 certifications, which align with the original part's approval agency requirements. The CBW57 series includes additional certifications (cURus, IP 40, SAE J1171) that provide expanded qualification scope.

The DC voltage rating differential (50V versus 32V) on substitute parts represents an enhanced specification that does not compromise compatibility with the original 32V DC requirement. All substitute parts are available in bulk packaging with active inventory status.

Selection among the five substitute part numbers should be based on internal design documentation, procurement specifications, or application-specific requirements not provided in the electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace the CLB-033-12CNN-R-A/03?

A: Yes. All five CBW57 substitute parts match the critical electrical parameters (3A, 250V AC, push-to-reset, single-pole, thermal type) and mounting configuration (panel mount). The higher DC voltage rating (50V versus 32V) on substitute parts is compatible with 32V DC applications.

Q: What is the significance of the DC voltage rating difference?

A: The original part is rated 32V DC. The substitute parts are rated 50V DC. A higher voltage rating indicates the component can safely operate at the original voltage specification and beyond. This represents an acceptable substitution parameter.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts are supplied in bulk packaging, consistent with the original CLB-033-12CNN-R-A/03 packaging specification.

Q: Do the substitute parts carry equivalent certifications?

A: The substitute parts carry UL 1077 and UL 1500 certifications, which are present on the original part. Additional certifications on substitute parts (cURus, IP 40, SAE J1171) provide expanded qualification without reducing compatibility.

Q: Are there differences among the five CBW57 substitute part numbers?

A: The five substitute part numbers (CBW57-EJ-3A, CBW57-EL4-3A, CBW57-ES-3A, CBW57-PF-3A-5X, CBW57-PS-3A-1X) share identical electrical and mechanical specifications. Differences are reflected in internal design variants, connector types, or manufacturing configurations not detailed in the provided parameters.

Q: What is the inventory status of substitute parts?

A: All substitute parts maintain active inventory: CBW57-EJ-3A (1203 pcs), CBW57-EL4-3A (1358 pcs), CBW57-ES-3A (1289 pcs), CBW57-PF-3A-5X (869 pcs), and CBW57-PS-3A-1X (1120 pcs).