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BP-AGC-1-1-2-RP Equivalent & Substitute Parts
Part Overview
The BP-AGC-1-1-2-RP is a 1.5 A, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton - Bussmann Electrical Division. This fuse is designed for use in 3AB and 3AG fuse holders with dimensions of 1/4" x 1-1/4" (6.35mm x 31.75mm). The part maintains active product status with 1083 pieces in current inventory. Substitute parts are identified when original stock becomes unavailable, when bulk packaging is required, or when alternative manufacturer sourcing is necessary for supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Current Rating | 1.5 A |
| Voltage Rating (AC) | 250 V |
| Fuse Type | Cartridge, Glass |
| Response Time | Fast Blow |
| Package / Case | 3AB, 3AG, 1/4" x 1-1/4" |
| Breaking Capacity @ Rated Voltage | 100 A |
| Operating Temperature Range | -55°C ~ 125°C |
| Mounting Type | Requires Holder |
| Size / Dimension | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) |
| Approval Agencies | CSA, UL |
Substitute Part Grouping Explanation
Substitution eligibility for the BP-AGC-1-1-2-RP is determined by strict equivalence across the following critical parameters:
Mandatory Matching Parameters:
- Current Rating: 1.5 A
- Voltage Rating (AC): 250 V
- Fuse Type: Cartridge, Glass
- Response Time: Fast Blow
- Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
- Breaking Capacity @ Rated Voltage: 100 A
- Operating Temperature Range: -55°C ~ 125°C
- Mounting Type: Requires Holder
- Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)
All identified substitute parts meet these mandatory parameters. Variations in secondary characteristics such as melting I²t, DC cold resistance, and manufacturer-specific certifications do not disqualify substitution when primary electrical and mechanical parameters align.
Parameter Comparison
| Parameter | BP-AGC-1-1-2-RP (Eaton) | 031201.5HXP (Littelfuse) | 031201.5MXP (Littelfuse) | 031201.5VXP (Littelfuse) | BK/AGC-1-1/2-R (Eaton) |
|---|---|---|---|---|---|
| Current Rating (Amps) | 1.5 A | 1.5 A | 1.5 A | 1.5 A | 1.5 A |
| Voltage Rating - AC | 250 V | 250 V | 250 V | 250 V | 250 V |
| Fuse Type | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass | Cartridge, Glass |
| Response Time | Fast Blow | Fast Blow | Fast Blow | Fast Blow | Fast Blow |
| Package / Case | 3AB, 3AG, 1/4" x 1-1/4" | 3AB, 3AG, 1/4" x 1-1/4" | 3AB, 3AG, 1/4" x 1-1/4" | 3AB, 3AG, 1/4" x 1-1/4" | 3AB, 3AG, 1/4" x 1-1/4" |
| Breaking Capacity @ Rated Voltage | 100 A | 100 A | 100 A | 100 A | 100 A |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Size / Dimension | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) | 0.250" Dia x 1.250" L (6.35mm x 31.75mm) |
| Mounting Type | Requires Holder | Requires Holder | Requires Holder | Requires Holder | Requires Holder |
| Approval Agency | CSA, UL | CE, CSA, PSE, UL | CE, CSA, PSE, UL | CE, CSA, PSE, UL | CSA, UL |
| Product Status | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Eaton - Bussmann Electrical Division Parts:
The BP-AGC-1-1-2-RP and BK/AGC-1-1/2-R are both manufactured by Eaton and share identical electrical specifications and approval certifications (CSA, UL). Both parts carry active product status. Selection between these two Eaton variants depends on packaging requirements and inventory availability. The BK/AGC-1-1/2-R is available in bulk packaging with 2231 pieces in stock, compared to 1083 pieces for the BP-AGC-1-1-2-RP.
Littelfuse Inc. Parts:
The 031201.5HXP, 031201.5MXP, and 031201.5VXP are functionally equivalent alternatives from Littelfuse Inc. All three parts meet the mandatory electrical and mechanical parameters. Littelfuse variants carry expanded approval certifications including CE and PSE in addition to CSA and UL. The 031201.5MXP offers the highest inventory availability at 30900 pieces. Selection among Littelfuse variants should be based on packaging requirements and supply chain sourcing preferences.
Cross-Manufacturer Substitution:
All four substitute parts are electrically and mechanically interchangeable with the BP-AGC-1-1-2-RP. Cross-manufacturer substitution is valid when primary electrical parameters and physical dimensions match. Approval certifications for all parts include CSA and UL, meeting standard regulatory requirements.
Frequently Asked Questions (FAQ)
Q: Can I substitute a Littelfuse 031201.5MXP for the original Eaton BP-AGC-1-1-2-RP?
A: Yes. Both parts are 1.5 A, 250 V AC/DC fast-blow glass cartridge fuses with identical physical dimensions (0.250" Dia x 1.250" L) and compatible 3AB/3AG package specifications. Both hold active product status and carry CSA and UL approvals.
Q: What is the difference between the three Littelfuse variants (031201.5HXP, 031201.5MXP, 031201.5VXP)?
A: All three Littelfuse parts are electrically and mechanically identical. They share the same current rating (1.5 A), voltage rating (250 V), response time (fast blow), and physical dimensions. Differences exist only in inventory availability: 031201.5HXP (1595 pcs), 031201.5MXP (30900 pcs), and 031201.5VXP (720 pcs).
Q: Are there any compatibility issues when switching between Eaton and Littelfuse fuses?
A: No compatibility issues exist. Both manufacturers produce fuses meeting the same electrical specifications, breaking capacity, and physical package requirements. Both hold equivalent regulatory approvals (CSA, UL). The fuses are mechanically interchangeable in standard 3AB/3AG fuse holders.
Q: Does the melting I²t value affect substitution eligibility?
A: The melting I²t value is a secondary characteristic that does not disqualify substitution when all primary electrical and mechanical parameters match. The BP-AGC-1-1-2-RP has a melting I²t of 9.023, while Littelfuse variants have 2.35. Both values are within acceptable ranges for the specified 1.5 A, 250 V fast-blow classification.
Q: Can I use the BK/AGC-1-1/2-R as a direct replacement for the BP-AGC-1-1-2-RP?
A: Yes. Both are Eaton AGC series fuses with identical electrical ratings, response characteristics, and physical dimensions. The BK/AGC-1-1/2-R is available in bulk packaging and carries the same CSA and UL approvals.
Q: What packaging options are available for these substitute parts?
A: The BP-AGC-1-1-2-RP is supplied in standard packaging (5 per package). The BK/AGC-1-1/2-R and all Littelfuse variants (031201.5HXP, 031201.5MXP, 031201.5VXP) are available in bulk packaging, suitable for high-volume applications or inventory consolidation.
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