EV1K090 Equivalent & Substitute Parts Reference

Part Overview

The EV1K090 is a 90A, 1 kVDC cylindrical cartridge fuse with bolt mount terminals, manufactured by Littelfuse Inc. as part of the EV1K series. This component is designed for electrical and industrial applications requiring fast-blow response characteristics and rated for operating temperatures between -40°C and 125°C.

The EV1K090 carries an obsolete product status. Identification of equivalent and substitute parts is necessary to ensure continued availability for maintenance, repair, and new system designs where this specification is required.

Substiute Parts

EV1K090

Littelfuse Inc.In Stock: 782EV1K090 Datasheet

Current PartRFQ

25EV1K090.ZXBDM

Littelfuse Inc.In Stock: 74325EV1K090.ZXBDM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EV1K090 is based on electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility:

• Current Rating: 90A (exact match required)
• Voltage Rating: 1 kVDC (exact match required)
• Breaking Capacity: 30kA (exact match required)

Mechanical Compatibility:

• Fuse Type: Cartridge (exact match required)
• Mounting Type: Bolt Mount (exact match required)
• Package / Case: Cylindrical, Blade Terminal (Bolt) (exact match required)

Environmental Compatibility:

• Operating Temperature Range: -40°C ~ 125°C (exact match required)

The substitute part 25EV1K090.ZXBDM meets all critical electrical and mechanical parameters. The primary distinction between the main part and substitute is product status (obsolete versus active) and physical dimensions, which do not affect functional compatibility in applications designed for the EV1K090 specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 25EV1K090.ZXBDM

The 25EV1K090.ZXBDM is the manufacturer-recommended substitute for the obsolete EV1K090. This part maintains electrical and mechanical compatibility across all critical parameters: 90A current rating, 1 kVDC voltage rating, 30kA breaking capacity, bolt mount configuration, and cylindrical cartridge form factor.

The 25EV1K090.ZXBDM carries active product status from Littelfuse Inc., ensuring ongoing availability and supply chain continuity. The part is manufactured by the original equipment manufacturer, providing design continuity and performance consistency.

Physical dimension differences (length: 4.375" versus 2.874") must be evaluated within the context of the specific application mounting structure. The diameter remains constant at 1.000", and both parts utilize identical blade terminal bolt mount interfaces. DC cold resistance values are functionally equivalent (0.001218 Ohms versus 0.00122 Ohms), with negligible impact on circuit performance.

Frequently Asked Questions (FAQ)

Q: Can the 25EV1K090.ZXBDM be used as a direct replacement for the EV1K090?

A: The 25EV1K090.ZXBDM is electrically and mechanically compatible with the EV1K090 across all critical parameters: current rating, voltage rating, breaking capacity, mounting type, and operating temperature range. Physical length differs (2.874" versus 4.375"), requiring verification that the mounting cavity accommodates the shorter dimension.

Q: What is the significance of the product status change from obsolete to active?

A: The EV1K090 is classified as obsolete, indicating discontinued manufacturing and limited availability. The 25EV1K090.ZXBDM maintains active status, ensuring continued production, supply availability, and manufacturer support. This transition is standard practice for component lifecycle management.

Q: Are there differences in electrical performance between these parts?

A: Both parts share identical electrical specifications: 90A current rating, 1 kVDC voltage rating, 30kA breaking capacity, and -40°C to 125°C operating temperature range. DC cold resistance values are equivalent (0.001218 Ohms versus 0.00122 Ohms), with no functional impact on circuit operation.

Q: What mounting considerations apply to the 25EV1K090.ZXBDM?

A: Both parts utilize bolt mount terminals with cylindrical blade terminal configuration. The primary consideration is physical length: the 25EV1K090.ZXBDM is 1.501" shorter than the EV1K090. Verify that the application mounting structure accommodates the 2.874" length specification.

Q: Is the 25EV1K090.ZXBDM suitable for the same applications as the EV1K090?

A: The 25EV1K090.ZXBDM is suitable for electrical and industrial applications requiring 90A, 1 kVDC cartridge fuse protection with fast-blow response characteristics. Application suitability depends on mounting cavity dimensions and circuit protection requirements matching the specified electrical parameters.