Circuit Breaker 0813020.ZXST Equivalent & Substitute Parts

Part Overview

The Littelfuse 0813020.ZXST is a 20A 12VDC automatic reset circuit breaker designed for chassis mount applications. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The part delivers single-pole protection with automatic reset functionality suitable for DC power distribution in automotive and industrial applications.

Substiute Parts

0813020.ZXST

Littelfuse Inc.In Stock: 9800813020.ZXST Datasheet

Current PartRFQ

ACBP-H-20A

OptiFuseIn Stock: 4017ACBP-H-20A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 0813020.ZXST is determined by the following critical parameters:

• Current Rating: 20A (exact match required)
• Actuator Type: Automatic Reset (functional requirement)
• Number of Poles: 1 (circuit configuration requirement)
• Mounting Type: Chassis Mount (physical installation requirement)
• Voltage Rating - DC: Minimum 12V (the substitute must support or exceed the original voltage rating)

The OptiFuse ACBP-H-20A qualifies as a substitute because it maintains the same current rating (20A), actuator type (automatic reset), pole configuration (1), and supports a higher voltage rating (32V DC), which is backward compatible with 12V DC applications. The voltage rating differential ensures the substitute can handle the original application's electrical demands.

Parameter Comparison

Engineering Selection Recommendations

The ACBP-H-20A from OptiFuse is the designated substitute for the obsolete 0813020.ZXST. Selection is based on the following factors:

• The substitute maintains identical current and pole ratings, ensuring equivalent circuit protection performance.
• The higher voltage rating (32V vs. 12V) provides enhanced margin for DC applications and is fully compatible with 12V systems.
• The substitute carries Active product status, ensuring long-term availability and supply chain continuity.
• ROHS3 compliance of the substitute aligns with modern regulatory requirements, whereas the original part is RoHS non-compliant.
• The substitute includes recognized approval certifications (IP 63, SAE J1171, SAE J553), providing additional validation for automotive and industrial applications.

Frequently Asked Questions (FAQ)

Q: Can the ACBP-H-20A directly replace the 0813020.ZXST in existing applications?

A: Yes. Both parts share the same current rating (20A), automatic reset actuator type, and single-pole configuration. The substitute's higher voltage rating (32V) is backward compatible with 12V DC circuits.

Q: What is the significance of the voltage rating difference?

A: The substitute's 32V rating exceeds the original 12V requirement, providing additional electrical margin. This higher rating does not negatively impact 12V applications and ensures the component can handle the specified voltage without degradation.

Q: Why is the original part listed as obsolete?

A: Obsolete status indicates the 0813020.ZXST is no longer manufactured by Littelfuse. The ACBP-H-20A provides functional continuity for systems requiring 20A automatic reset circuit protection.

Q: Are there packaging differences between these parts?

A: The original part packaging is listed as unspecified. The substitute is supplied in Bulk packaging. Verify packaging requirements for your procurement process.

Q: What certifications does the substitute carry?

A: The ACBP-H-20A meets IP 63, SAE J1171, and SAE J553 standards, providing validation for automotive and industrial environments.

Q: Is the substitute RoHS compliant?

A: Yes. The ACBP-H-20A is ROHS3 compliant, whereas the original part is RoHS non-compliant. This compliance improvement may be required for new designs or regulatory adherence.