Eaton Bussmann KAA-30 Fuse Cartridge Equivalent & Substitute Parts

Part Overview

The Eaton Bussmann KAA-30 is a 30A 130VAC fast-blow cartridge fuse in the Tron® KAA series, designed for applications requiring a 5AG midget cartridge format (10mm x 38mm). This part is classified as obsolete, making identification of compatible substitutes essential for system maintenance and component replacement. The KAA-30 requires a dedicated fuse holder for installation and operates at a nominal voltage rating of 130VAC with a fast-blow response characteristic.

Substiute Parts

KAA-30

Eaton - Bussmann Electrical DivisionIn Stock: 827KAA-30 Datasheet

Current PartRFQ

FWA-30A10F

Eaton - Bussmann Electrical DivisionIn Stock: 1198FWA-30A10F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KAA-30 is determined by the following critical parameters that must remain constant or be compatible:

• Current Rating: 30A (exact match required)
• Package / Case: 5AG, 10mm x 38mm midget cartridge format (physical compatibility with existing holders)
• Mounting Type: Requires Holder (same installation method)
• Fuse Type: Cartridge (functional category)

The substitute part FWA-30A10F meets these core requirements. While the FWA-30A10F provides a higher voltage rating (150VAC/150VDC versus 130VAC), this represents an upgrade in capability and does not compromise compatibility in 130VAC applications. The identical physical dimensions and 5AG package classification ensure mechanical fit within existing KAA-30 fuse holders.

Parameter Comparison

Engineering Selection Recommendations

The FWA-30A10F is the direct substitute for the obsolete KAA-30. Selection is based on the following engineering criteria:

• Current Rating Match: Both parts are rated 30A, ensuring equivalent circuit protection characteristics
• Physical Compatibility: Identical 5AG midget cartridge dimensions (10mm x 38mm) guarantee mechanical fit in existing KAA-30 fuse holders
• Voltage Capability: The FWA-30A10F's 150VAC rating exceeds the KAA-30's 130VAC requirement, providing operational margin in 130VAC circuits
• Product Status: The FWA-30A10F is active and in production, ensuring long-term availability and supply chain continuity
• Compliance: The FWA-30A10F carries CE and UR approvals and is ROHS3 compliant, meeting modern regulatory requirements
• Breaking Capacity: The FWA-30A10F specifies 100kA breaking capacity at rated voltage, providing documented fault protection performance

Frequently Asked Questions (FAQ)

Q: Can the FWA-30A10F be used as a direct replacement for the KAA-30 in existing equipment?

A: Yes. Both parts share identical current ratings (30A), package format (5AG, 10mm x 38mm), and mounting requirements (cartridge holder). The FWA-30A10F's higher voltage rating (150VAC) is compatible with 130VAC applications.

Q: What is the significance of the 5AG package designation?

A: The 5AG designation identifies the midget cartridge fuse format with standardized dimensions of 10mm diameter by 38mm length. This ensures physical compatibility between KAA-30 and FWA-30A10F within the same fuse holder hardware.

Q: Why does the FWA-30A10F have a higher voltage rating than the KAA-30?

A: The FWA-30A10F is rated for 150VAC/150VDC, compared to the KAA-30's 130VAC. This represents an enhanced design capability. In 130VAC applications, the higher rating provides operational margin without affecting circuit protection performance.

Q: Are there any compatibility concerns with the slight dimensional difference (38.00mm vs 38.10mm length)?

A: No. The 0.10mm difference is within standard manufacturing tolerance for cartridge fuses and does not affect mechanical fit or electrical performance in standard 5AG fuse holders.

Q: What certifications does the FWA-30A10F carry?

A: The FWA-30A10F is certified by CE and UR approval agencies and is ROHS3 compliant, meeting current regulatory standards for electrical components.