CLBA-083-NNFNN-B-A Circuit Breaker Thermal 8A 250V AC 32V DC

Part Overview

The CLBA-083-NNFNN-B-A is an active thermal circuit breaker manufactured by Carling Technologies, rated for 8 amperes at 250 volts AC and 32 volts DC. This single-pole, panel-mount device features push-to-reset actuation and is designed for overcurrent protection in electrical systems. The part holds multiple regulatory 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 in circuit protection applications.

Key Parameters

Parameter	Value
Manufacturer	Carling Technologies
Series	CLB
Mounting Type	Panel Mount
Breaker Type	Thermal
Current Rating	8A
Voltage Rating - AC	250 V
Voltage Rating - DC	32 V
Actuator Type	Push to Reset
Number of Poles	1
Illumination	None
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the CLBA-083-NNFNN-B-A are identified based on strict equivalence of the following critical parameters:

Current Rating: 8 amperes
Voltage Rating - AC: 250 volts
Breaker Type: Thermal
Actuator Type: Push to Reset
Mounting Type: Panel Mount
Number of Poles: 1 pole
Product Status: Active

All identified substitute parts are manufactured by OptiFuse under the CBW57 series. These parts maintain identical current ratings, AC voltage ratings, breaker type, actuator mechanism, mounting configuration, and pole count. The DC voltage rating for substitute parts is 50 volts, which exceeds the 32-volt DC specification of the main part, providing enhanced capability in DC applications. All substitute parts maintain ROHS3 compliance and active product status.

Parameter Comparison

Parameter	CLBA-083-NNFNN-B-A (Carling)	CBW57-AS-8A (OptiFuse)	CBW57-EJ-8A (OptiFuse)	CBW57-HS-8A (OptiFuse)	CBW57-PB-8A-5X (OptiFuse)	CBW57-PS-8A-5X (OptiFuse)
Mounting Type	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount
Breaker Type	Thermal	Thermal	Thermal	Thermal	Thermal	Thermal
Current Rating (Amps)	8A	8A	8A	8A	8A	8A
Voltage Rating - AC	250 V	250 V	250 V	250 V	250 V	250 V
Voltage Rating - DC	32 V	50 V	50 V	50 V	50 V	50 V
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 circuit breakers listed as substitutes meet the electrical and mechanical requirements for direct replacement of the CLBA-083-NNFNN-B-A. Each substitute part maintains active product status and ROHS3 compliance, ensuring regulatory alignment with the original component.

The substitute parts carry regulatory approvals including cURus, IP 40, SAE J1171, UL 1077, and UL 1500 certifications. While the original part includes CE and TUV approvals not explicitly listed for the substitutes, the UL 1077 and UL 1500 certifications are common to both the main part and all substitute options, providing established safety standards for thermal circuit breaker operation.

The DC voltage rating differential (50V for substitutes versus 32V for the main part) represents an enhancement in DC application capability. This higher rating does not compromise AC performance and provides additional margin in DC circuit protection scenarios.

Selection among the five substitute part numbers (CBW57-AS-8A, CBW57-EJ-8A, CBW57-HS-8A, CBW57-PB-8A-5X, CBW57-PS-8A-5X) is determined by specific connector or terminal configuration requirements, as all maintain identical electrical specifications and thermal protection characteristics.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series circuit breakers directly replace the CLBA-083-NNFNN-B-A in existing installations?

A: Yes. All five OptiFuse CBW57 variants maintain identical current ratings (8A), AC voltage ratings (250V), breaker type (thermal), actuator mechanism (push to reset), mounting configuration (panel mount), and pole count (1 pole). These parameters define functional equivalence for circuit protection applications.

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

A: The substitute parts are rated for 50 volts DC compared to the original part's 32 volts DC. This represents an expanded operating envelope for DC applications. The higher rating does not affect AC performance and provides additional safety margin in DC circuit protection.

Q: Are the OptiFuse CBW57 parts certified to the same standards as the Carling CLBA-083-NNFNN-B-A?

A: Both the original and substitute parts carry UL 1077 and UL 1500 certifications, which are the primary safety standards for thermal circuit breaker operation. The original part includes additional CE and TUV approvals. The substitute parts carry cURus, IP 40, and SAE J1171 certifications. All parts maintain ROHS3 compliance.

Q: How do the five OptiFuse part numbers differ from each other?

A: The five substitute part numbers (CBW57-AS-8A, CBW57-EJ-8A, CBW57-HS-8A, CBW57-PB-8A-5X, CBW57-PS-8A-5X) differ in connector or terminal configuration. All maintain identical electrical specifications, thermal protection characteristics, and regulatory compliance. Selection is based on specific terminal or connector requirements for the application.

Q: Is RoHS3 compliance maintained across all substitute options?

A: Yes. The original CLBA-083-NNFNN-B-A and all five OptiFuse CBW57 substitute parts are ROHS3 compliant, ensuring consistency in environmental and hazardous substance restrictions.

Q: What inventory levels are available for the substitute parts?

A: CBW57-HS-8A has the highest inventory at 3,442 pieces. CBW57-PB-8A-5X has 1,332 pieces, CBW57-AS-8A has 1,145 pieces, CBW57-PS-8A-5X has 1,096 pieces, and CBW57-EJ-8A has 1,027 pieces. The original CLBA-083-NNFNN-B-A has 838 pieces in stock.

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