021302.5MXP LITTELFUSE Fuse (Fuses Chip) In Stock
Littelfuse 021302.5MXP is a 2.5 A time-lag (slow-blow) glass tube fuse in a standard 5×20 mm inline/holder-mount form factor with a 35 A breaking capacity. Features a 138 J rated energy integral for motor and transformer inrush tolerance without nuisance tripping. Available in bulk packaging through global distributors with worldwide shipping.
- Manufacturer
- LITTELFUSE
- Package
- Fuses Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- 021302.5MXP Datasheet PDF
- Category
- Fuse
- Price
- From $0.3230(MOQ 25)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2.5 A time-lag blow characteristic tolerates inrush currents up to 10× rated current for several cycles, preventing nuisance tripping in motor, transformer, and capacitive-load circuits
- 35 A rated breaking capacity in a 5×20 mm glass tube format provides dependable overcurrent interruption across a wide range of fault energy levels
- 138 J rated Joule integral quantifies the energy the fuse can absorb before clearing, enabling precise coordination with upstream circuit breakers and downstream load limits
Applications
The 021302.5MXP is used in power supplies, motor control panels, and audio equipment where slow-blow protection is required to allow high inrush current at startup without blowing the fuse prematurely. Its 5×20 mm glass tube format fits widely available inline fuse holders and panel-mount fuse blocks, making it a standard replacement component in European and global electrical equipment.
Specifications
| YTEOL | 6.77 |
| Blow Characteristic | TIME LAG |
| Body Height | 20mm |
| Body Length or Diameter | 5.2mm |
| Circuit Protection Type | ELECTRIC FUSE |
| Fuse Size | 5x20mm |
| Joule Integral-Nom | 138J |
| Mounting Feature | INLINE/HOLDER |
| Packing Method | BULK |
| Rated Breaking Capacity | 35A |
| Rated Current | 2.5A |
| Rated Voltage(AC) | 250V |
| Reference Standard | CCC; CE; CSA; PSE; SEMKO; SEV; UL; VDE |
| Surface Mount | NO |
| Terminal Finish | NICKEL |
| Terminal Shape | END CAP |
| Trip Time or Delay | 0.02s |
| Package | Fuses Chip |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why use a time-lag fuse like the 021302.5MXP instead of a fast-blow fuse in motor circuits?
Motors and transformers draw inrush currents typically 5× to 10× their rated current during startup for 20 ms to 500 ms. A fast-blow fuse would clear during this inrush, shutting down the equipment unnecessarily. The 021302.5MXP time-lag fuse survives these brief high-current transients thanks to its 138 J energy integral rating, only clearing during a true sustained overload or short-circuit event.
What is the breaking capacity of the 021302.5MXP and why does it matter?
The 021302.5MXP has a rated breaking capacity of 35 A, meaning it can safely interrupt fault currents up to 35 A without arcing, exploding, or allowing sustained current flow after opening. For a 2.5 A rated fuse, this provides a 14× safety margin above nominal, ensuring reliable protection in low-impedance supply systems where short-circuit currents can briefly exceed 10 A.
Which fuse holders are compatible with the 5×20 mm 021302.5MXP?
The 021302.5MXP fits any standard 5×20 mm fuse holder, including panel-mount holders, PCB-mount clips, and inline in-line fuse holders rated for the body dimensions of 5.2 mm diameter and 20 mm length. Common compatible holders include Littelfuse's own 345 series and third-party holders designed to the IEC 60127 standard for 5×20 mm glass tube fuses.
How should the 021302.5MXP be selected for a 2.5 A continuous-load power supply circuit?
For a power supply with a 2.5 A continuous load, the 021302.5MXP 2.5 A time-lag fuse provides a 1:1 current rating match per IEC 60127 guidelines. However, designers should verify that the startup inrush current does not exceed the fuse's I²t Joule integral of 138 J and that the maximum expected fault current stays below the 35 A breaking capacity to ensure both nuisance-free operation and reliable fault clearing.
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Why Buy from FindMyChip
About LITTELFUSE
LITTELFUSE is a leading electronic component manufacturer. FindMyChip sources LITTELFUSE ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.5500 | $13.75 |
| 50+ | $0.5450 | $27.25 |
| 100+ | $0.5340 | $53.40 |
| 250+ | $0.4144 | $103.60 |
| 500+ | $0.3523 | $176.15 |
| 1000+ | $0.3230 | $323.00 |
In Stock · 24h Response · Worldwide Shipping
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