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

Part Overview

The CLB-033-11ANN-R-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 3A at 250V AC and 32V DC with push-to-reset panel mount actuation. This single-pole breaker is designed for overcurrent protection in low-voltage DC and AC applications. The part maintains active product status with full compliance to CE, cUL, TUV, UL1077, and UL1500 standards. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, inventory management, or supply chain continuity.

Key Parameters

Parameter	Value
Breaker Type	Thermal
Current Rating	3A
Voltage Rating - AC	250V
Voltage Rating - DC	32V
Actuator Type	Push to Reset
Number of Poles	1
Mounting Type	Panel Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the CLB-033-11ANN-R-A are qualified based on matching the following critical parameters:

Electrical Parameters:

Current Rating: 3A (exact match required)
Voltage Rating - AC: 250V (exact match required)
Actuator Type: Push to Reset (exact match required)

Mechanical Parameters:

Breaker Type: Thermal (exact match required)
Number of Poles: 1 (exact match required)
Mounting Type: Panel Mount (exact match required)

Compliance Parameters:

RoHS3 Compliant status (required)
Active product status (required)

All five substitute parts from OptiFuse (CBW57 series) meet these core substitution criteria. The DC voltage rating variance (50V DC on substitutes versus 32V DC on the main part) represents an uprated specification that does not restrict substitution, as the substitute parts maintain compatibility with the 32V DC application requirement.

Parameter Comparison

Parameter	CLB-033-11ANN-R-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
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
Mounting Type	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount
Illumination	None	None	None	None	None	None
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All five OptiFuse CBW57 series parts (CBW57-EJ-3A, CBW57-EL4-3A, CBW57-ES-3A, CBW57-PF-3A-5X, and CBW57-PS-3A-1X) are qualified substitutes for the CLB-033-11ANN-R-A based on electrical and mechanical parameter equivalence.

Compliance Alignment:

Main part certifications: CE, cUL, TUV, UL1077, UL1500
Substitute part certifications: cURus, IP 40, SAE J1171, UL 1077, UL 1500

Both part families maintain UL1077 and UL1500 approval agency designations. The substitute parts carry cURus and SAE J1171 certifications, which provide additional regulatory coverage for specific applications.

Inventory Availability:

CLB-033-11ANN-R-A: 978 pieces in stock
CBW57-EJ-3A: 1203 pieces in stock
CBW57-EL4-3A: 1358 pieces in stock
CBW57-ES-3A: 1289 pieces in stock
CBW57-PF-3A-5X: 869 pieces in stock
CBW57-PS-3A-1X: 1120 pieces in stock

All parts are available in bulk packaging with active product status. Selection among substitute options may be based on specific application requirements, connector type variants, or packaging configuration needs indicated by the part number suffix.

Frequently Asked Questions (FAQ)

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

A: Yes. All five CBW57 variants match the critical electrical parameters (3A, 250V AC, 32V DC compatible) and mechanical specifications (thermal, single-pole, panel mount, push-to-reset). The higher DC voltage rating (50V) on substitute parts does not restrict their use in 32V DC applications.

Q: What is the difference between the five CBW57 substitute part numbers?

A: The CBW57 base series shares identical electrical and mechanical specifications. Part number suffixes (EJ, EL4, ES, PF-5X, PS-1X) indicate variations in connector type, terminal configuration, or packaging format. Selection depends on the specific connector interface required for the application.

Q: Are there compliance differences between the main part and substitutes?

A: Both the CLB-033-11ANN-R-A and all CBW57 variants maintain UL1077 and UL1500 certifications. The substitute parts include additional certifications (cURus, IP 40, SAE J1171) that provide expanded regulatory coverage for specific industries or applications.

Q: What is the significance of the DC voltage rating difference (32V versus 50V)?

A: The substitute parts are rated for 50V DC, which exceeds the 32V DC requirement of the main part. This uprated specification ensures the substitute parts operate safely in the 32V DC application and provides additional design margin.

Q: Can I use these parts interchangeably in the same circuit board layout?

A: Electrical and thermal performance are interchangeable. Physical compatibility depends on the specific connector type and terminal configuration indicated by the part number suffix. Verify the connector interface matches the application's terminal requirements.

Q: What is the Moisture Sensitivity Level (MSL) for the substitute parts?

A: All CBW57 variants carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.

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