Littelfuse 0285020.MXP Ceramic Fuse 20A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 0285020.MXP is an active ceramic cartridge fuse rated for 20A at 250VAC with slow-blow response characteristics. This component is designed for circuit protection in applications requiring a 5mm x 20mm form factor with holder mounting. Substitute parts are identified based on matching electrical ratings, mechanical dimensions, response time classification, and approval certifications to ensure direct functional equivalence in circuit protection applications.

Substiute Parts

0285020.MXP

Littelfuse Inc.In Stock: 6590285020.MXP Datasheet

Current PartRFQ

0215020.MXP

Littelfuse Inc.In Stock: 15330215020.MXP Datasheet

Parametric EquivalentRFQ

TCC-20A

OptiFuseIn Stock: 1038TCC-20A Datasheet

Parametric EquivalentRFQ

TUC UDA 20A 250V (PF)

ConquerIn Stock: 1905TUC UDA 20A 250V (PF) Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0285020.MXP are qualified based on the following mandatory parameters:

• Current Rating: 20 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All identified substitute parts meet these core electrical and mechanical parameters, ensuring functional equivalence for direct replacement in circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance. Selection between the 0285020.MXP and its substitutes should be based on approval agency requirements and breaking capacity specifications:

The Littelfuse 0215020.MXP provides equivalent electrical performance with PSE, SEMKO, and UL certifications. The TUC UDA 20A 250V (PF) from Conquer offers cURus and TUV approvals with 400A breaking capacity. The OptiFuse TCC-20A carries UL 248 certification with a 200A breaking capacity, which is lower than the primary part and other substitutes.

Component selection must align with the specific approval agencies and breaking capacity requirements of the target application circuit.

Frequently Asked Questions (FAQ)

Q: Can the 0215020.MXP replace the 0285020.MXP directly?

A: Yes. Both parts share identical electrical ratings (20A, 250VAC), fuse type (ceramic cartridge), response time (slow blow), and mechanical dimensions (5mm x 20mm). The primary difference is the series designation (215 vs. 285) and approval certifications. The 0215020.MXP includes additional SEMKO and UL certifications.

Q: What is the difference between the TCC-20A and other substitutes?

A: The TCC-20A from OptiFuse meets all core electrical and mechanical parameters. However, its breaking capacity is 200A, compared to 400A for the 0285020.MXP and TUC UDA 20A 250V (PF). This lower breaking capacity may limit its use in applications requiring higher fault current protection.

Q: Are all substitutes compatible with existing fuse holders?

A: Yes. All substitute parts maintain the 5mm x 20mm form factor and require holder mounting, ensuring mechanical compatibility with existing fuse holder installations.

Q: How do approval certifications affect part selection?

A: Approval certifications (PSE, UL, SEMKO, cURus, TUV) indicate compliance with specific regional or industry standards. The 0285020.MXP carries PSE approval, while the 0215020.MXP includes PSE, SEMKO, and UL. The TUC UDA 20A 250V (PF) carries cURus and TUV approvals. Selection must match the approval requirements of the target application and regulatory jurisdiction.

Q: What do the Melting I²t and DC Cold Resistance values indicate?

A: Melting I²t represents the thermal energy required to melt the fuse element and is a measure of fuse sensitivity. DC Cold Resistance indicates the resistance of the fuse element at room temperature. While these values vary among substitutes, all parts are rated for the same 20A current and 250VAC voltage, ensuring functional equivalence in circuit protection.