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AGC-1/4-R Glass Cartridge Fuse Equivalent & Substitute Parts
Part Overview
The AGC-1/4-R is a 250 mA, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This component is classified as Active product status and is designed for applications requiring fast-acting overcurrent protection in 3AB and 3AG holder configurations. The fuse operates across an extended temperature range of -55°C to 125°C and carries CSA and UL approvals. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for this standard fuse specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Current Rating | 250 mA |
| Voltage Rating (AC) | 250 V |
| Fuse Type | Cartridge, Glass |
| Response Time | Fast Blow |
| Package / Case | 3AB, 3AG, 1/4" x 1-1/4" (6.35mm x 31.75mm) |
| Breaking Capacity @ Rated Voltage | 35A |
| Operating Temperature Range | -55°C to 125°C |
| Mounting Type | Requires Holder |
| Approval Agencies | CSA, UL |
| RoHS Status | RoHS Compliant |
Substitute Part Grouping Explanation
Substitute parts for the AGC-1/4-R are classified based on electrical and mechanical parameter alignment:
Direct Manufacturer Equivalent: BK/AGC-1/4-R (Eaton - Electronics Division) maintains identical electrical specifications, mechanical dimensions, and holder compatibility. This part represents the same base product with alternative packaging designation.
Similar Manufacturer Parts: 0312.250VXP and 0312.250MXP (Littelfuse Inc., Series 312) provide functional equivalence across all critical parameters: 250 mA current rating, 250 V AC voltage rating, fast-blow response, 3AB/3AG holder compatibility, and identical physical dimensions. These parts satisfy the same application requirements and holder specifications.
Parametric Equivalent: 0312.250HXP (Littelfuse Inc., Series 312) meets all electrical and mechanical requirements for direct substitution, including current rating, voltage rating, response time, package configuration, and operating temperature range.
Substitution eligibility is determined by matching: current rating (250 mA), voltage rating (250 V AC), fuse type (cartridge glass), response time (fast blow), package dimensions (1/4" x 1-1/4"), and holder compatibility (3AB, 3AG).
Parameter Comparison
| Part Number | Manufacturer | Current Rating (mA) | Voltage Rating (V AC) | Response Time | Package / Case | Breaking Capacity (A) | Operating Temperature (°C) | Approval Agencies | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| AGC-1/4-R | Eaton - Electronics Division | 250 | 250 | Fast Blow | 3AB, 3AG, 1/4" x 1-1/4" | 35 | -55 to 125 | CSA, UL | RoHS Compliant | 745 |
| BK/AGC-1/4-R | Eaton - Electronics Division | 250 | 250 | Fast Blow | 3AB, 3AG, 1/4" x 1-1/4" | 35 | -55 to 125 | CSA, UL | ROHS3 Compliant | 1226 |
| 0312.250VXP | Littelfuse Inc. | 250 | 250 | Fast Blow | 3AB, 3AG, 1/4" x 1-1/4" | 35 | -55 to 125 | CE, CSA, UL | ROHS3 Compliant | 1034 |
| 0312.250MXP | Littelfuse Inc. | 250 | 250 | Fast Blow | 3AB, 3AG, 1/4" x 1-1/4" | 35 | -55 to 125 | CE, CSA, UL | ROHS3 Compliant | 10583 |
| 0312.250HXP | Littelfuse Inc. | 250 | 250 | Fast Blow | 3AB, 3AG, 1/4" x 1-1/4" | 35 | -55 to 125 | CE, CSA, UL | ROHS3 Compliant | 3000 |
Engineering Selection Recommendations
All listed substitute parts maintain Active product status and satisfy the electrical and mechanical requirements for direct substitution in applications requiring 250 mA, 250 V AC/DC fast-blow glass cartridge fuses with 3AB/3AG holder compatibility.
BK/AGC-1/4-R is the primary direct equivalent, manufactured by Eaton - Electronics Division with identical specifications and higher inventory availability (1226 pcs). This part carries ROHS3 compliance and maintains CSA and UL approvals.
Littelfuse 0312.250VXP, 0312.250MXP, and 0312.250HXP provide cross-manufacturer substitution with equivalent electrical and mechanical parameters. All three Littelfuse parts carry expanded approval agency coverage (CE, CSA, UL) and ROHS3 compliance. The 0312.250MXP variant offers the highest inventory level (10583 pcs), supporting extended supply availability.
Selection among substitute parts should be based on procurement requirements, inventory availability, and supply chain preferences. All parts are functionally interchangeable within the specified application parameters.
Frequently Asked Questions (FAQ)
Q: Can BK/AGC-1/4-R be used as a direct replacement for AGC-1/4-R?
A: Yes. BK/AGC-1/4-R is manufactured by Eaton - Electronics Division and maintains identical electrical specifications (250 mA, 250 V AC), response time (fast blow), mechanical dimensions (1/4" x 1-1/4"), and holder compatibility (3AB, 3AG). Both parts carry CSA and UL approvals.
Q: Are Littelfuse 0312 series fuses compatible with AGC-1/4-R applications?
A: Yes. The 0312.250VXP, 0312.250MXP, and 0312.250HXP parts match all critical parameters: 250 mA current rating, 250 V AC voltage rating, fast-blow response, identical physical dimensions, and 3AB/3AG holder compatibility. These parts are approved by CE, CSA, and UL.
Q: What is the difference between 0312.250VXP, 0312.250MXP, and 0312.250HXP?
A: All three parts share identical electrical and mechanical specifications for the AGC-1/4-R substitution. Differences are limited to internal design variants within the Littelfuse 312 series. Selection should be based on inventory availability and procurement requirements.
Q: Do all substitute parts meet RoHS compliance requirements?
A: Yes. BK/AGC-1/4-R carries ROHS3 compliance. All Littelfuse substitute parts (0312.250VXP, 0312.250MXP, 0312.250HXP) are ROHS3 compliant and REACH unaffected.
Q: Are there any temperature or approval differences between the main part and substitutes?
A: Operating temperature range is identical across all parts (-55°C to 125°C). AGC-1/4-R carries CSA and UL approvals. All Littelfuse substitutes carry expanded approvals (CE, CSA, UL), providing broader regulatory coverage.
Q: Which substitute part offers the best inventory availability?
A: The 0312.250MXP (Littelfuse Inc.) provides the highest inventory level at 10583 pcs, followed by BK/AGC-1/4-R at 1226 pcs.
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