Circuit Breaker Thermal Magnetic 12A SCHURTER 4420.0428

Part Overview

The SCHURTER 4420.0428 is a thermal magnetic circuit breaker rated for 12A at 277V AC and 65V DC, designed for DIN rail mounting with lever actuation and 2-pole configuration. This component is classified as obsolete, necessitating identification of equivalent alternatives for ongoing system maintenance and new installations where this specific model is no longer available from primary sources.

Substiute Parts

4420.0428

SCHURTER Inc.In Stock: 9784420.0428 Datasheet

Current PartRFQ

4420.0416

SCHURTER Inc.In Stock: 8064420.0416 Datasheet

DirectRFQ

1019939

Phoenix ContactIn Stock: 11051019939 Datasheet

SimilarRFQ

4230-T120-K0BE-12A

E-T-AIn Stock: 10734230-T120-K0BE-12A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCHURTER 4420.0428 is determined by the following mandatory parameters:

• Current Rating: 12A (exact match required)
• Breaker Type: Thermal Magnetic (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Actuator Type: Lever (exact match required)
• Number of Poles: 2 (exact match required)
• Voltage Rating - AC: 277V minimum (equal or higher acceptable)
• Voltage Rating - DC: 65V minimum (equal or higher acceptable)
• RoHS and REACH Compliance: ROHS3 Compliant and REACH Unaffected (maintained)

The substitute parts identified meet these core electrical and mechanical parameters while accommodating higher voltage ratings where applicable.

Parameter Comparison

Engineering Selection Recommendations

Direct Manufacturer Substitute (Preferred for Same-Manufacturer Continuity): SCHURTER 4420.0416 maintains manufacturer continuity within the SCHURTER product line. While voltage ratings are elevated (480V AC vs. 277V AC), this part satisfies all mandatory electrical and mechanical parameters. The obsolete status of both parts indicates end-of-life conditions; however, this option provides design consistency if existing SCHURTER infrastructure is present.

Active Product Alternatives (Recommended for New Designs and Long-Term Availability): Phoenix Contact 1019939 and E-T-A 4230-T120-K0BE-12A are both active products with current manufacturing status, ensuring long-term availability and supply chain stability. Both parts exceed the DC voltage requirement (125V vs. 65V), providing additional operational margin. Phoenix Contact 1019939 matches the AC voltage specification (277V), while E-T-A 4230-T120-K0BE-12A operates at 480V AC. Selection between these alternatives depends on system voltage requirements and preferred supplier relationships.

Compliance Verification: All substitute parts maintain ROHS3 compliance and REACH unaffected status. E-T-A 4230-T120-K0BE-12A carries CSA C22.2 No 235 and UL1077 certifications. SCHURTER 4420.0416 carries CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077, and UL508 certifications.

Frequently Asked Questions (FAQ)

Q: Can SCHURTER 4420.0416 directly replace SCHURTER 4420.0428 in existing installations? A: Yes. Both parts share identical current rating (12A), breaker type (thermal magnetic), mounting configuration (DIN rail, 2-pole lever), and DC voltage rating (65V). The AC voltage rating difference (480V vs. 277V) does not prevent substitution in 277V AC systems, as the higher rating provides operational compatibility.

Q: Why are Phoenix Contact 1019939 and E-T-A 4230-T120-K0BE-12A listed as alternatives if they have different voltage ratings? A: Both parts meet all mandatory substitution criteria: 12A current rating, thermal magnetic operation, DIN rail mounting, 2-pole lever actuation, and compliance standards. Higher voltage ratings (277V AC and 480V AC respectively, with 125V DC) are acceptable in applications requiring the original 277V AC / 65V DC specification, as they provide additional operational margin without compromising functionality.

Q: What is the significance of product status (obsolete vs. active)? A: Obsolete products indicate discontinued manufacturing. SCHURTER 4420.0428 and SCHURTER 4420.0416 are both obsolete, meaning existing inventory may be limited. Phoenix Contact 1019939 and E-T-A 4230-T120-K0BE-12A are active products with ongoing production, ensuring consistent availability for new installations and future replacements.

Q: Are there packaging differences between these parts? A: Yes. SCHURTER 4420.0428 is packaged as individual units (-), SCHURTER 4420.0416 in bulk, Phoenix Contact 1019939 in boxes, and E-T-A 4230-T120-K0BE-12A in bulk. Packaging selection depends on procurement volume and inventory management requirements.

Q: Do all substitute parts carry the same certifications? A: No. SCHURTER 4420.0416 carries the most comprehensive certification set (CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077, UL508). E-T-A 4230-T120-K0BE-12A carries CSA C22.2 No 235 and UL1077. Phoenix Contact 1019939 certifications are not specified in the provided data. System requirements may dictate which certifications are necessary for your application.