Circuit Breaker Thermal 104-D91-PR3-2A Equivalent & Substitute Parts

Part Overview

The 104-D91-PR3-2A is a thermal circuit breaker manufactured by E-T-A, rated for 2A at 240V AC and 48V DC. This through-hole mounted device features push-to-reset actuation and serves as an overcurrent protection component in electronic and electrical systems. The part maintains Active product status with full compliance to international safety standards including CE, CSA C22.2 No 235, GB 17701, IEC 60934, and UL1077 certifications. Equivalent substitute parts are identified when electrical ratings, mechanical mounting characteristics, and regulatory approvals align with the original specification.

Substiute Parts

104-D91-PR3-2A

E-T-AIn Stock: 1135104-D91-PR3-2A Datasheet

Current PartRFQ

104-PR-2A

E-T-AIn Stock: 895104-PR-2A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 104-D91-PR3-2A are identified based on strict electrical and mechanical parameter matching. The critical substitution criteria are:

• Current Rating: 2A (exact match required)
• Voltage Rating - AC: 240V (exact match required)
• Voltage Rating - DC: 48V (exact match required)
• Breaker Type: Thermal (exact match required)
• Mounting Type: Through Hole (exact match required)
• Actuator Type: Push to Reset (exact match required)
• Number of Poles: 1 (exact match required)
• Regulatory Approvals: CE, CSA C22.2 No 235, GB 17701, IEC 60934, UL1077 (all certifications must be present)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The 104-PR-2A qualifies as a parametric equivalent because it matches all specified electrical ratings, mechanical configuration, and regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

The 104-PR-2A serves as a direct parametric equivalent to the 104-D91-PR3-2A. Both parts are manufactured by E-T-A within the 104 series and maintain identical electrical specifications, mechanical configuration, and regulatory compliance profiles. Selection between these parts may be based on availability and inventory status. The 104-D91-PR3-2A currently maintains 1082 pieces in stock, while the 104-PR-2A maintains 850 pieces in stock. Both parts carry Active product status and full ROHS3 compliance with all required international certifications.

Frequently Asked Questions (FAQ)

Q: Can the 104-PR-2A be used as a direct replacement for the 104-D91-PR3-2A?

A: Yes. The 104-PR-2A is a parametric equivalent with identical current rating (2A), voltage ratings (240V AC / 48V DC), thermal breaker type, through-hole mounting, push-to-reset actuation, and regulatory approvals. Both parts are manufactured by E-T-A within the same 104 series.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact matching of current rating (2A), AC voltage rating (240V), DC voltage rating (48V), breaker type (thermal), mounting type (through hole), actuator type (push to reset), pole configuration (1 pole), and regulatory certifications (CE, CSA C22.2 No 235, GB 17701, IEC 60934, UL1077).

Q: Are there differences in packaging or physical dimensions between these parts?

A: Both parts are supplied in bulk packaging. No dimensional or physical configuration differences are specified in the provided parameters.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the 104-D91-PR3-2A and 104-PR-2A carry identical approval certifications: CE, CSA C22.2 No 235, GB 17701, IEC 60934, and UL1077. Both are ROHS3 compliant.

Q: Which part should be selected based on availability?

A: Selection may be based on inventory requirements. The 104-D91-PR3-2A has 1082 pieces available, while the 104-PR-2A has 850 pieces available. Both maintain Active product status.