CMB-083-11CNN-W-A Equivalent & Substitute Parts

Part Overview

The CMB-083-11CNN-W-A is a thermal circuit breaker manufactured by Carling Technologies, designed for panel mount applications. This single-pole breaker operates at 8A current rating with 250 V AC and 32 V DC voltage specifications, featuring push-to-reset actuation. The component maintains Active product 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 inventory requirements necessitate alternative component selection.

Key Parameters

Parameter	Value
Breaker Type	Thermal
Current Rating	8A
Voltage Rating - AC	250 V
Voltage Rating - DC	32 V
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 CMB-083-11CNN-W-A are qualified based on electrical and mechanical parameter alignment. All identified substitutes maintain identical specifications across the following critical parameters: 8A current rating, 250 V AC voltage rating, push-to-reset actuation, single-pole configuration, panel mount installation, and thermal breaker type. The substitute parts are manufactured by OptiFuse under the CBW57 series designation.

A parameter variance exists in DC voltage rating: the main part specifies 32 V DC, while all substitute parts are rated for 50 V DC. This represents an increased voltage capability in the substitute components. All substitute parts maintain ROHS3 compliance and carry equivalent international approvals including cURus, UL 1077, and UL 1500 certifications.

Parameter Comparison

Parameter	CMB-083-11CNN-W-A (Carling)	CBW57-AS-8A (OptiFuse)	CBW57-EJ-8A (OptiFuse)	CBW57-HS-8A (OptiFuse)	CBW57-PB-8A-5X (OptiFuse)	CBW57-PS-8A-5X (OptiFuse)
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
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
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 substitute parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the original CMB-083-11CNN-W-A component. The CBW57 series substitutes carry international certifications including cURus, UL 1077, and UL 1500, providing equivalent approval coverage for most applications.

The primary distinction between the main part and substitutes is the DC voltage rating increase from 32 V to 50 V in the OptiFuse components. This parameter variance does not restrict substitution in applications operating at or below 32 V DC. For applications requiring operation specifically at voltages exceeding 32 V DC but not exceeding 50 V DC, the CBW57 series substitutes provide expanded operational capability.

Inventory availability varies across substitute options: CBW57-HS-8A offers the highest stock level at 3,442 pieces, followed by CBW57-PB-8A-5X at 1,332 pieces, CBW57-PS-8A-5X at 1,096 pieces, CBW57-AS-8A at 1,145 pieces, and CBW57-EJ-8A at 1,027 pieces.

Frequently Asked Questions (FAQ)

Q: Can CBW57 series parts directly replace the CMB-083-11CNN-W-A in all applications?

A: Yes, for applications operating at 32 V DC or lower. The CBW57 series maintains identical current rating (8A), AC voltage rating (250 V), mounting configuration (panel mount), actuation method (push to reset), and pole count (1). The increased DC voltage rating (50 V) in substitute parts does not restrict their use in lower-voltage applications.

Q: What is the significance of the DC voltage rating difference between the main part and substitutes?

A: The main part is rated for 32 V DC maximum, while all CBW57 substitutes are rated for 50 V DC maximum. This means substitute parts can operate in applications requiring up to 50 V DC, providing broader voltage compatibility. Applications limited to 32 V DC or lower operate within the specifications of both the original and substitute parts.

Q: Are all substitute parts electrically and mechanically interchangeable?

A: All five substitute parts (CBW57-AS-8A, CBW57-EJ-8A, CBW57-HS-8A, CBW57-PB-8A-5X, CBW57-PS-8A-5X) share identical electrical specifications and mechanical mounting characteristics. Differences in part number designations reflect manufacturing or packaging variations within the OptiFuse CBW57 series, not functional differences.

Q: Do the substitute parts carry equivalent regulatory approvals?

A: The CBW57 series substitutes carry cURus, UL 1077, and UL 1500 certifications. The original CMB-083-11CNN-W-A carries CE, cUL, TUV, UL1077, and UL1500 certifications. Both component families meet UL 1077 and UL 1500 standards. Applications requiring CE or TUV certification should verify specific regulatory requirements with the equipment manufacturer.

Q: Which substitute part should be selected based on availability?

A: CBW57-HS-8A provides the highest inventory level at 3,442 pieces. All substitute parts maintain Active product status and equivalent electrical specifications, making selection based on inventory availability and lead time requirements appropriate for non-critical regulatory applications.

Q: Are there any packaging differences among the substitute parts?

A: All substitute parts are supplied in Bulk packaging. Designations such as "-5X" in part numbers CBW57-PB-8A-5X and CBW57-PS-8A-5X reflect internal packaging or configuration variations within the OptiFuse product line but do not affect electrical or mechanical compatibility.

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