CLB-073-11ANN-B-A Circuit Breaker Equivalent & Substitute Parts

Part Overview

The CLB-073-11ANN-B-A is a thermal circuit breaker manufactured by Carling Technologies, rated for 7A at 250V AC and 32V DC. This single-pole, panel-mount device features push-to-reset actuation and is designed for overcurrent protection in low-voltage applications. The part maintains Active product status and carries multiple international approvals including CE, cUL, TUV, UL1077, and UL1500 certifications. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across alternative manufacturers, ensuring functional interchangeability within specified operating conditions.

Key Parameters

Parameter	Value
Breaker Type	Thermal
Current Rating	7A
Voltage Rating - AC	250V
Voltage Rating - DC	32V
Mounting Type	Panel Mount
Actuator Type	Push to Reset
Number of Poles	1
Illumination	None
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the CLB-073-11ANN-B-A are qualified based on the following critical parameters that determine functional equivalence:

Electrical Parameters:

Current Rating: 7A (exact match required)
Voltage Rating - AC: 250V (exact match required)
Breaker Type: Thermal (exact match required)

Mechanical Parameters:

Mounting Type: Panel Mount (exact match required)
Actuator Type: Push to Reset (exact match required)
Number of Poles: 1 (exact match required)

Compliance Parameters:

RoHS3 Compliant status (maintained across all substitutes)
Product Status: Active (all substitutes maintain active status)

The substitute parts identified (CBW57-HS-7A-5C, CBW57-ES-7A-5H, CBW57-EJ-7A, CBW57-EL4-7A) are manufactured by OptiFuse and maintain all critical electrical and mechanical parameters. These parts operate at 250V AC with enhanced DC voltage capability (50V DC versus 32V DC on the main part), representing a superset of the original specification. All substitutes are single-pole thermal circuit breakers with panel-mount configuration and push-to-reset actuation.

Parameter Comparison

Parameter	CLB-073-11ANN-B-A (Carling)	CBW57-HS-7A-5C (OptiFuse)	CBW57-ES-7A-5H (OptiFuse)	CBW57-EJ-7A (OptiFuse)	CBW57-EL4-7A (OptiFuse)
Breaker Type	Thermal	Thermal	Thermal	Thermal	Thermal
Current Rating (Amps)	7A	7A	7A	7A	7A
Voltage Rating - AC	250V	250V	250V	250V	250V
Voltage Rating - DC	32V	50V	50V	50V	50V
Mounting Type	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
Number of Poles	1	1	1	1	1
Illumination	None	None	None	None	None
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All four OptiFuse CBW57 series substitutes (CBW57-HS-7A-5C, CBW57-ES-7A-5H, CBW57-EJ-7A, CBW57-EL4-7A) maintain Active product status and satisfy the core electrical and mechanical requirements of the CLB-073-11ANN-B-A. Each substitute carries international approvals including cURus, UL 1077, and UL 1500 certifications, ensuring compliance with applicable standards.

The primary distinction among substitute options is DC voltage rating. The CLB-073-11ANN-B-A operates at 32V DC maximum, while all OptiFuse substitutes are rated for 50V DC. This higher DC rating on substitute parts represents enhanced capability and does not restrict their use in applications requiring 32V DC operation.

Inventory availability varies across substitute options: CBW57-ES-7A-5H (2482 pcs), CBW57-EL4-7A (1998 pcs), CBW57-HS-7A-5C (1197 pcs), and CBW57-EJ-7A (1884 pcs). Selection among these four equivalent parts may be determined by supply chain requirements and delivery timelines.

Frequently Asked Questions (FAQ)

Q: Are all four OptiFuse substitutes electrically equivalent to the CLB-073-11ANN-B-A?

A: Yes. All four substitutes (CBW57-HS-7A-5C, CBW57-ES-7A-5H, CBW57-EJ-7A, CBW57-EL4-7A) maintain identical current rating (7A), AC voltage rating (250V), mounting configuration (panel mount), actuation method (push to reset), and pole count (1). These parameters define functional equivalence for thermal circuit breaker applications.

Q: What is the significance of the higher DC voltage rating on OptiFuse substitutes?

A: OptiFuse substitutes are rated for 50V DC compared to the CLB-073-11ANN-B-A rating of 32V DC. A higher DC voltage rating indicates enhanced capability and does not restrict operation at lower voltages. Applications operating at 32V DC or below are fully compatible with these substitutes.

Q: Do all substitutes carry the same international certifications as the main part?

A: The CLB-073-11ANN-B-A carries CE, cUL, TUV, UL1077, and UL1500 approvals. OptiFuse substitutes carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. Both sets of approvals satisfy industrial and commercial circuit breaker standards. Specific certification requirements for your application should be verified against your system specifications.

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

A: No mechanical differences exist in the parameters provided. All parts feature single-pole, panel-mount thermal circuit breakers with push-to-reset actuation. Physical dimensions and mounting footprints are not specified in the provided data and should be confirmed through manufacturer datasheets if mechanical fit is a critical requirement.

Q: Can I use any of the four OptiFuse substitutes interchangeably?

A: Yes. All four OptiFuse substitutes (CBW57-HS-7A-5C, CBW57-ES-7A-5H, CBW57-EJ-7A, CBW57-EL4-7A) are parametrically equivalent and functionally interchangeable. Selection among them may be based on inventory availability, delivery lead times, or internal supply chain preferences.

Q: Are all parts RoHS3 compliant?

A: Yes. The CLB-073-11ANN-B-A and all four OptiFuse substitutes maintain ROHS3 Compliant status, ensuring compliance with hazardous substance restrictions in applicable markets.

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