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

Part Overview

The CLB-033-11ANN-W-A is a thermal circuit breaker manufactured by Carling Technologies, designed for panel mount applications. This single-pole breaker operates at 3A current rating with 250V AC and 32V DC voltage specifications, featuring push-to-reset actuation. The product is active in production status and carries multiple international approvals including CE, cUL, TUV, UL1077, and UL1500 certifications. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits equivalent component selection.

Key Parameters

Parameter	Value
Manufacturer Part Number	CLB-033-11ANN-W-A
Manufacturer	Carling Technologies
Series	CLB
Breaker Type	Thermal
Current Rating	3A
Voltage Rating - AC	250V
Voltage Rating - DC	32V
Mounting Type	Panel Mount
Actuator Type	Push to Reset
Number of Poles	1
Illumination	None
Product Status	Active
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the CLB-033-11ANN-W-A are qualified based on the following critical parameters that determine functional equivalence:

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: Substitute parts rated at 50V DC exceed the 32V DC specification of the main part. This represents an upward-compatible rating that maintains safety margins in DC applications.

All substitute parts are manufactured by OptiFuse and belong to the CBW57 series. Each substitute maintains identical AC voltage, current rating, mounting configuration, and actuation mechanism as the CLB-033-11ANN-W-A.

Parameter Comparison

Parameter	CLB-033-11ANN-W-A (Carling)	CBW57-EJ-3A (OptiFuse)	CBW57-EL4-3A (OptiFuse)	CBW57-ES-3A (OptiFuse)	CBW57-PF-3A-5X (OptiFuse)	CBW57-PS-3A-1X (OptiFuse)
Breaker Type	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal
Current Rating (Amps)	3A	3A	3A	3A	3A	3A
Voltage Rating - AC	250V	250V	250V	250V	250V	250V
Voltage Rating - DC	32V	50V	50V	50V	50V	50V
Mounting Type	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount
Actuator Type	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset	Push to Reset
Number of Poles	1	1	1	1	1	1
Illumination	None	None	None	None	None	None
Product Status	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All five OptiFuse CBW57 series substitute parts meet the electrical and mechanical requirements for direct substitution with the CLB-033-11ANN-W-A. Selection among the substitute options should be based on the following factors:

Compliance and Certifications: The CLB-033-11ANN-W-A carries approvals from CE, cUL, TUV, UL1077, and UL1500. The OptiFuse CBW57 series parts carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Both product lines maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for industrial and consumer applications.

Availability and Inventory: OptiFuse CBW57-EL4-3A maintains the highest inventory level at 1358 pieces, followed by CBW57-ES-3A at 1289 pieces. The CLB-033-11ANN-W-A has 839 pieces in stock. Selection based on supply chain requirements and lead time considerations is appropriate.

DC Voltage Rating Consideration: All substitute parts are rated for 50V DC, which exceeds the 32V DC specification of the main part. This higher rating provides additional safety margin in DC circuit applications and does not create compatibility issues in circuits designed for 32V DC operation.

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

Frequently Asked Questions (FAQ)

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

A: Yes. The CBW57 series substitute parts match all critical electrical parameters: 3A current rating, 250V AC voltage, push-to-reset actuation, single-pole configuration, and panel mount form factor. The 50V DC rating of the CBW57 parts exceeds the 32V DC specification, providing upward-compatible operation.

Q: What is the significance of the higher 50V DC rating on the substitute parts?

A: The 50V DC rating on CBW57 parts represents a higher voltage capability than the 32V DC specification of the CLB-033-11ANN-W-A. This does not create incompatibility; circuits designed for 32V DC operation function correctly with components rated for 50V DC. The higher rating provides additional safety margin.

Q: Are there differences in approval agencies between the main part and substitutes?

A: The CLB-033-11ANN-W-A carries CE, cUL, TUV, UL1077, and UL1500 approvals. The CBW57 series carries cURus, IP 40, SAE J1171, UL 1077, and UL 1500 approvals. Both product lines meet UL 1077 and UL 1500 standards. Application-specific regulatory requirements should be verified against the approval agencies relevant to the end-use market.

Q: Which substitute part should be selected for new designs?

A: All five CBW57 variants are functionally equivalent. Selection should be based on availability, lead time, packaging requirements, and internal design standards. CBW57-EL4-3A and CBW57-ES-3A offer the highest inventory levels.

Q: Do the substitute parts have any moisture sensitivity restrictions?

A: No. All CBW57 series parts specify MSL 1 (Unlimited), indicating no moisture sensitivity limitations during storage, handling, or assembly processes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All five CBW57 substitute parts and the CLB-033-11ANN-W-A are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for industrial applications.

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