SCHURTER 4420.0429 Circuit Breaker - Equivalent & Substitute Parts

Part Overview

The SCHURTER 4420.0429 is a thermal magnetic circuit breaker rated at 1.5A with dual voltage capability (277V AC / 65V DC). This component is designed for DIN rail mounting with lever actuation and 2-pole configuration. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and replacement applications.

Substiute Parts

4420.0429

SCHURTER Inc.In Stock: 8004420.0429 Datasheet

Current PartRFQ

1019995

Phoenix ContactIn Stock: 10211019995 Datasheet

SimilarRFQ

4230-T120-K0BE-1.5A

E-T-AIn Stock: 12384230-T120-K0BE-1.5A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for thermal magnetic circuit breakers is determined by the following critical parameters:

Primary Compatibility Criteria:

• Mounting type (DIN Rail)
• Breaker type (Thermal Magnetic)
• Actuator type (Lever)
• Number of poles (2)
• Voltage ratings (AC and DC must meet or exceed application requirements)
• Current rating (must match or provide appropriate protection margin)

The identified substitute parts maintain the same mounting standard, breaker technology, and actuation method. However, voltage and current ratings differ and must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Phoenix Contact 1019995: This substitute provides matching AC voltage rating (277V) with enhanced DC voltage capability (125V vs. 65V). The current rating increases to 2A, which provides additional protection margin. Product status is active with current manufacturing support. ROHS3 compliance is maintained. Selection is appropriate for applications where the higher current rating does not conflict with circuit protection requirements.

E-T-A 4230-T120-K0BE-1.5A: This substitute maintains the exact current rating (1.5A) and provides enhanced voltage ratings (480V AC / 125V DC). The higher AC voltage rating accommodates applications with elevated supply voltages. Product status is active with CSA C22.2 No 235 and UL1077 certifications. ROHS3 compliance is maintained. Selection is appropriate for applications requiring precise current matching with higher voltage system compatibility.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1019995 (2A) be used as a direct replacement for the SCHURTER 4420.0429 (1.5A)?

A: The Phoenix Contact 1019995 shares identical mounting, breaker type, actuation, and pole configuration. The 2A current rating is higher than the original 1.5A specification. Substitution is permissible only if the circuit design accommodates the increased current rating and the application does not require the specific 1.5A protection threshold.

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

A: The SCHURTER original operates at 277V AC / 65V DC. Both substitutes exceed these ratings. The Phoenix Contact matches the AC voltage (277V) while the E-T-A exceeds it (480V AC). Higher voltage ratings indicate the component can safely operate in systems with those supply voltages. Selection depends on the actual system voltage requirements.

Q: Are all three breakers RoHS3 compliant?

A: Yes. The SCHURTER 4420.0429, Phoenix Contact 1019995, and E-T-A 4230-T120-K0BE-1.5A are all ROHS3 compliant, ensuring compatibility with environmental and regulatory requirements.

Q: What is the difference between the two substitute options?

A: The Phoenix Contact 1019995 prioritizes AC voltage matching (277V) with increased current capacity (2A). The E-T-A 4230-T120-K0BE-1.5A prioritizes current rating matching (1.5A) with higher overall voltage capability (480V AC). Selection depends on whether the application is current-sensitive or voltage-sensitive.

Q: Why is the original SCHURTER part obsolete?

A: Product obsolescence indicates the manufacturer has discontinued production. Active alternatives from Phoenix Contact and E-T-A provide equivalent functionality with current manufacturing support and availability.