Equivalent & Substitute Parts for BK1/GMA-2.5-R

Part Overview

The BK1/GMA-2.5-R is a 2.5 A 250 V AC DC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This component is designed for use in fuse holders and provides overcurrent protection in electrical circuits rated up to 250 V AC. The part maintains active product status with 1473 pieces in current inventory. Substitute parts are identified to support procurement flexibility, supply chain continuity, and design standardization across equivalent protection requirements.

Substiute Parts

BK1/GMA-2.5-R

Eaton - Electronics DivisionIn Stock: 1495BK1/GMA-2.5-R Datasheet

Current PartRFQ

023502.5HXP

Littelfuse Inc.In Stock: 8682023502.5HXP Datasheet

DirectRFQ

023502.5MXP

Littelfuse Inc.In Stock: 1740023502.5MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK1/GMA-2.5-R are qualified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Mandatory Matching Parameters:

• Current Rating: 2.5 A
• Voltage Rating (AC): 250 V
• Fuse Type: Cartridge, Glass
• Response Time: Fast Blow
• Package / Case: 5mm x 20mm
• Breaking Capacity @ Rated Voltage: 100 A
• Mounting Type: Requires Holder

All identified substitute parts meet these requirements. Substitute parts are sourced from Littelfuse Inc., Series 235, and maintain active product status with verified inventory availability.

Parameter Comparison

Engineering Selection Recommendations

BK1/GMA-2.5-R (Eaton - Electronics Division)

Select this part when Eaton component standardization is required or when existing designs specify the GMA series. This part is active and maintains adequate inventory. Approval agencies include CSA, PSE, and UL.

023502.5HXP (Littelfuse Inc., Series 235)

This substitute provides equivalent electrical and mechanical performance with expanded operating temperature range (-55°C ~ 125°C) and broader approval agency coverage (CE, CSA, KC, PSE, UL). Inventory availability is significantly higher at 8618 pieces. DC cold resistance is marginally lower at 0.0437 Ohms compared to 0.046 Ohms in the main part. Melting I²t is 5.445 compared to 4.9 in the main part.

023502.5MXP (Littelfuse Inc., Series 235)

This substitute is electrically and mechanically identical to 023502.5HXP with the same operating temperature range, approval agencies, and electrical characteristics. Inventory is available at 1690 pieces. Selection between 023502.5HXP and 023502.5MXP depends on procurement source and availability requirements.

All three parts are ROHS3 compliant, REACH unaffected, and suitable for direct substitution in applications requiring 2.5 A 250 V AC DC fast-blow glass cartridge fuses in 5mm x 20mm form factor.

Frequently Asked Questions (FAQ)

Q: Can 023502.5HXP or 023502.5MXP be used as direct replacements for BK1/GMA-2.5-R?

A: Yes. Both Littelfuse parts meet all mandatory electrical and mechanical parameters: 2.5 A current rating, 250 V AC voltage rating, fast-blow response, 5mm x 20mm package, 100 A breaking capacity, and cartridge glass fuse type. Physical dimensions are identical at 0.205" Dia x 0.787" L.

Q: What is the difference between 023502.5HXP and 023502.5MXP?

A: Both parts are from Littelfuse Series 235 and share identical electrical specifications, operating temperature range (-55°C ~ 125°C), approval agencies (CE, CSA, KC, PSE, UL), and physical dimensions. The primary difference is inventory availability: 023502.5HXP has 8618 pieces in stock, while 023502.5MXP has 1690 pieces.

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

A: The main part BK1/GMA-2.5-R carries CSA, PSE, and UL approvals. Both Littelfuse substitutes carry CE, CSA, KC, PSE, and UL approvals, providing broader regulatory coverage. All three parts are ROHS3 compliant and REACH unaffected.

Q: What is the significance of the melting I²t difference?

A: The main part has melting I²t of 4.9, while both Littelfuse substitutes have 5.445. This parameter indicates thermal energy dissipation during fuse operation. The substitutes have slightly higher values, which remains within acceptable tolerance for equivalent fast-blow cartridge fuse performance at the specified 2.5 A rating.

Q: Do these fuses require a holder for installation?

A: Yes. All three parts (BK1/GMA-2.5-R, 023502.5HXP, and 023502.5MXP) are cartridge fuses that require a fuse holder for installation. They are not panel-mount or inline fuses.

Q: What is the operating temperature range for BK1/GMA-2.5-R?

A: Operating temperature is not specified in the provided data for the main part. The Littelfuse substitutes operate from -55°C to 125°C, providing a defined temperature envelope for applications requiring temperature-rated components.