CLB-033-11ANN-B-A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The CLB-033-11ANN-B-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 3A at 250V AC and 32V DC. This single-pole, panel-mount breaker features push-to-reset actuation and is designed for overcurrent protection in low-voltage applications. The part maintains active product status with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards.

Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits selection from alternative manufacturers meeting equivalent electrical and mechanical specifications.

Substiute Parts

CLB-033-11ANN-B-A

Carling TechnologiesIn Stock: 853CLB-033-11ANN-B-A 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

Substitution eligibility for the CLB-033-11ANN-B-A is determined by matching the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 3A
• 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 CLB-033-11ANN-B-A operates at 32V DC. Substitute parts rated at 50V DC are acceptable, as higher DC voltage ratings provide equivalent or superior performance in applications not exceeding the original specification.

All five substitute parts from OptiFuse (CBW57 series) meet these criteria with identical AC voltage, current, mounting, breaker type, actuation, and pole configuration. The DC voltage rating increase from 32V to 50V represents a design margin that does not compromise compatibility in circuits designed for the original 32V DC specification.

Parameter Comparison

Engineering Selection Recommendations

All five OptiFuse CBW57 series substitute parts maintain active product status and full ROHS3 compliance, ensuring long-term availability and regulatory alignment with the original CLB-033-11ANN-B-A.

The substitute parts carry approval certifications including cURus, IP 40, SAE J1171, UL 1077, and UL 1500. While the original part includes CE and TUV certifications, the substitute parts maintain UL 1077 and UL 1500 standards common to both designs, supporting equivalent safety and performance validation.

All substitute parts are available in bulk packaging with inventory levels ranging from 869 to 1358 pieces, providing supply security for production requirements.

The DC voltage rating increase from 32V to 50V in the OptiFuse alternatives does not introduce compatibility issues in applications designed for the original 32V specification, as the higher rating represents additional design margin without affecting circuit operation.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series breakers directly replace the CLB-033-11ANN-B-A in existing designs?

A: Yes. The CBW57 series substitute parts match all critical electrical parameters: 3A current rating, 250V AC voltage, 32V DC circuit compatibility (with 50V DC rated capacity), panel-mount configuration, thermal operation, push-to-reset actuation, and single-pole design. Physical mounting dimensions and terminal configurations must be verified against specific application requirements.

Q: What is the significance of the 50V DC rating on substitute parts versus the 32V DC original specification?

A: The 50V DC rating on OptiFuse CBW57 parts provides additional voltage margin. In applications operating at or below 32V DC, the higher rating ensures equivalent or superior performance. The substitute parts are fully compatible with circuits designed for the original 32V DC specification.

Q: Are all five CBW57 variants electrically identical?

A: All five CBW57 variants (CBW57-EJ-3A, CBW57-EL4-3A, CBW57-ES-3A, CBW57-PF-3A-5X, CBW57-PS-3A-1X) share identical electrical specifications: 3A, 250V AC, 50V DC, thermal operation, push-to-reset actuation, and single-pole configuration. Variant designations reflect different connector or terminal configurations. Selection among variants depends on specific terminal or connector requirements of the application.

Q: Do substitute parts maintain the same regulatory compliance as the original?

A: Substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part. Both the original and substitutes carry UL 1077 and UL 1500 certifications. The original includes CE and TUV certifications; substitutes include cURus, IP 40, and SAE J1171 certifications. All certifications support equivalent safety and performance standards for thermal circuit breaker applications.

Q: What inventory considerations apply when selecting substitute parts?

A: The original CLB-033-11ANN-B-A has 829 pieces in stock. Substitute parts offer higher inventory levels: CBW57-EL4-3A (1358 pcs), CBW57-ES-3A (1289 pcs), CBW57-PS-3A-1X (1120 pcs), CBW57-EJ-3A (1203 pcs), and CBW57-PF-3A-5X (869 pcs). Selection based on inventory availability supports production scheduling and supply chain continuity.

Q: Are there any mechanical or dimensional differences between the original and substitute parts?

A: All parts share panel-mount configuration and single-pole design. Specific mechanical dimensions, terminal types, and mounting hole patterns are not provided in the parametric data. Physical verification against application drawings is required before final selection.