ESS20-003-DC24V-8A Equivalent & Substitute Parts

Part Overview

The ESS20-003-DC24V-8A is a solid state circuit breaker manufactured by E-T-A, rated for 8A at 24V DC with push-push actuator control. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The ESS20 series has been superseded by the ESS30-S series, which maintains core electrical specifications while offering enhanced features and active product status.

Substiute Parts

ESS20-003-DC24V-8A

E-T-AIn Stock: 1077ESS20-003-DC24V-8A Datasheet

Current PartRFQ

ESS30-S003-DC24V-8A

E-T-AIn Stock: 1166ESS30-S003-DC24V-8A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ESS20-003-DC24V-8A is determined by the following critical parameters:

• Current Rating: 8A (must match exactly)
• Voltage Rating - DC: 24V minimum (substitute may exceed this specification)
• Breaker Type: Solid State (must match)
• Number of Poles: 1 (must match)
• Mounting Type: Holder (must match)
• Approval Agency: IEC 60934, UL1077 (must maintain compliance)

The ESS30-S003-DC24V-8A qualifies as a direct substitute because it maintains identical current rating, pole configuration, mounting type, and regulatory approvals. The voltage rating increase from 24V to 30V represents an upward compatibility margin suitable for DC applications. The actuator type transition from push-push to pushbutton reflects a design evolution within the ESS30-S series while preserving functional equivalence in circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

The ESS30-S003-DC24V-8A is the designated manufacturer substitute for the obsolete ESS20-003-DC24V-8A. Selection of this substitute is supported by:

• Identical current and pole specifications ensure equivalent circuit protection performance
• Increased DC voltage rating (30V vs. 24V) provides operational margin in 24V DC systems
• Maintained regulatory compliance with IEC 60934 and UL1077 standards
• Active product status ensures long-term availability and supply chain continuity
• ROHS3 compliance alignment with environmental and regulatory requirements
• Solid state breaker technology consistency across both models

The actuator type change from push-push to pushbutton and expanded illumination options (addition of red indicator) represent design improvements in the ESS30-S series without compromising functional equivalence for standard circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can the ESS30-S003-DC24V-8A directly replace the ESS20-003-DC24V-8A in existing installations?

A: Yes. Both components share identical current ratings (8A), pole configuration (1-pole), mounting type (holder), and regulatory approvals (IEC 60934, UL1077). The increased voltage rating of the substitute (30V vs. 24V) is compatible with 24V DC systems.

Q: What is the significance of the voltage rating difference between the two models?

A: The ESS30-S003-DC24V-8A operates at a higher maximum voltage (30V DC) compared to the ESS20-003-DC24V-8A (24V DC). This represents an upward compatibility margin and does not restrict operation in 24V DC applications.

Q: How do the actuator types differ between these models?

A: The ESS20-003-DC24V-8A uses a push-push actuator mechanism, while the ESS30-S003-DC24V-8A uses a pushbutton actuator. Both provide equivalent circuit protection functionality; the difference reflects design evolution within the product line.

Q: Are there packaging differences between the main part and substitute?

A: The ESS20-003-DC24V-8A is packaged as a standard holder configuration. The ESS30-S003-DC24V-8A is supplied in bulk packaging. Both maintain identical mounting type specifications.

Q: Does the addition of red illumination in the substitute affect compatibility?

A: No. The expanded illumination options (green, orange, red in the substitute vs. green, orange in the main part) represent an enhancement and do not affect circuit protection performance or electrical compatibility.

Q: What is the product status implication for long-term availability?

A: The ESS20-003-DC24V-8A is classified as obsolete, indicating discontinued production. The ESS30-S003-DC24V-8A maintains active product status, ensuring continued manufacturing and supply chain availability for future requirements.