ESS20-003-DC24V-1A Equivalent & Substitute Parts

Part Overview

The ESS20-003-DC24V-1A is a solid state circuit breaker manufactured by E-T-A, rated for 1A at 24V DC with push-push actuator control. This component is classified as obsolete, necessitating identification of active equivalent models to maintain system functionality and ensure continued availability for new designs and field replacements.

Substiute Parts

ESS20-003-DC24V-1A

E-T-AIn Stock: 805ESS20-003-DC24V-1A Datasheet

Current PartRFQ

ESS30-S003-DC24V-1A

E-T-AIn Stock: 724ESS30-S003-DC24V-1A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ESS20-003-DC24V-1A is determined by the following critical parameters:

• Breaker Type: Solid State (functional requirement)
• Current Rating: 1A (load protection specification)
• Voltage Rating - DC: Minimum 24V (system voltage compatibility)
• Mounting Type: Holder (mechanical interface)
• Number of Poles: 1 (circuit configuration)
• Approval Agency: IEC 60934, UL1077 (regulatory compliance)

The substitute part ESS30-S003-DC24V-1A meets all mandatory substitution criteria. The increased voltage rating of 30V DC provides backward compatibility with 24V DC systems while offering enhanced margin. The transition from push-push to pushbutton actuator represents a functional change in control interface but maintains equivalent circuit protection capability.

Parameter Comparison

Engineering Selection Recommendations

The ESS30-S003-DC24V-1A is the manufacturer-recommended substitute for the obsolete ESS20-003-DC24V-1A. Selection is justified on the following basis:

• Product Status: The substitute is active, ensuring long-term availability and supply chain continuity.
• Electrical Compatibility: Identical current rating (1A) and voltage rating equal to or exceeding the original specification (30V DC vs. 24V DC).
• Regulatory Compliance: Both components maintain identical approval certifications (IEC 60934, UL1077) and RoHS3 compliance status.
• Mechanical Interface: Identical mounting type (Holder) and pole configuration (1) ensure physical compatibility within existing designs.
• Actuator Transition: The change from push-push to pushbutton actuator requires mechanical interface verification in the application but does not affect electrical protection performance.

Frequently Asked Questions (FAQ)

Q: Can the ESS30-S003-DC24V-1A directly replace the ESS20-003-DC24V-1A in existing applications?

A: Electrical and regulatory compatibility is confirmed. Mechanical compatibility depends on the actuator interface design. The pushbutton actuator on the substitute differs from the push-push design on the original part. Physical fit and control mechanism must be verified for the specific application.

Q: What is the significance of the increased voltage rating (30V vs. 24V)?

A: The 30V DC rating on the substitute provides backward compatibility with 24V DC systems. A higher voltage rating does not compromise performance at lower voltages and offers additional safety margin.

Q: Are the illumination options interchangeable?

A: The substitute offers extended illumination options (Green, Orange, Red) compared to the original (Green, Orange). Selection of specific illumination colors depends on application requirements and is configurable at the time of procurement.

Q: Why is the actuator type different between the original and substitute?

A: The ESS20 series uses push-push actuation, while the ESS30-S series uses pushbutton actuation. This represents a design evolution within the E-T-A product line. Functional circuit protection capability remains equivalent; however, the control interface requires mechanical compatibility assessment.

Q: Are both parts RoHS3 compliant?

A: Yes, both the ESS20-003-DC24V-1A and ESS30-S003-DC24V-1A are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What packaging options are available?

A: The original part is available in standard packaging. The substitute is available in bulk packaging, which may affect procurement quantities and logistics considerations.