SCHURTER 4430.1789 Circuit Breaker Thermal 20A 240VAC 60VDC Equivalent & Substitute Parts

Part Overview

The SCHURTER 4430.1789 is a thermal circuit breaker rated for 20A at 240V AC and 60V DC, featuring a rocker panel mount actuator with dual-pole configuration in the TA45 series. This component is classified as Active product status with full ROHS3 compliance and REACH unaffected designation. Equivalent and substitute parts within this product family maintain identical electrical and mechanical specifications, enabling direct replacement in applications requiring thermal protection across AC and DC voltage domains.

Key Parameters

Parameter	Specification
Manufacturer	SCHURTER Inc.
Series	TA45
Breaker Type	Thermal
Current Rating	20A
Voltage Rating - AC	240V
Voltage Rating - DC	60V
Mounting Type	Panel Mount
Actuator Type	Rocker
Number of Poles	2
Product Status	Active
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
Packaging	Bulk

Substitute Part Grouping Explanation

Substitution eligibility for SCHURTER TA45 series thermal circuit breakers is determined by strict parametric equivalence across the following criteria:

Primary Substitution Parameters:

Current Rating: 20A (exact match required)
Voltage Rating AC: 240V (exact match required)
Voltage Rating DC: 60V (exact match required)
Breaker Type: Thermal (exact match required)
Mounting Type: Panel Mount (exact match required)
Actuator Type: Rocker (exact match required)
Number of Poles: 2 (exact match required)
Series: TA45 (exact match required)

All substitute parts listed maintain identical electrical performance characteristics and mechanical form factors. Differences in inventory levels, MSL designation, and approval agency certifications do not affect substitution eligibility but may influence procurement decisions based on application-specific compliance requirements.

Parameter Comparison

Part Number	Manufacturer	Series	Breaker Type	Current Rating	Voltage AC	Voltage DC	Mounting	Actuator	Poles	RoHS Status	Product Status	Inventory (Pcs)
4430.1789	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	1031
4430.0035	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	673
4430.0038	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	688
4430.0572	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	951
4430.0978	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	1070
4430.0988	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	1097
4430.1067	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	922
4430.1068	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	916
4430.161	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	753
4430.1629	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	1098
4430.1805	SCHURTER Inc.	TA45	Thermal	20A	240V	60V	Panel Mount	Rocker	2	ROHS3	Active	933

Engineering Selection Recommendations

All listed substitute parts maintain Active product status with ROHS3 compliance and REACH unaffected designation. Selection among equivalent parts should be based on inventory availability and application-specific certification requirements.

Parts 4430.0572, 4430.1067, 4430.1068, and 4430.1805 carry approval agency certifications including CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, and UL1077. These certifications provide additional regulatory validation for applications requiring multi-standard compliance.

Parts 4430.0978 and 4430.0988 offer highest inventory availability at 1070 and 1097 units respectively, supporting procurement efficiency for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can any substitute part replace the 4430.1789 in my application?

A: All listed substitute parts are parametrically equivalent across electrical and mechanical specifications. Direct substitution is supported for any application where the 4430.1789 is specified, provided the application does not require specific approval agency certifications beyond ROHS3 compliance.

Q: What is the difference between parts with and without approval agency certifications?

A: Parts carrying CSA, EN, GB, IEC, and UL certifications have undergone additional regulatory testing and validation. These certifications are required for applications subject to specific regional or industry standards. Parts without listed certifications remain compliant with ROHS3 and REACH requirements but lack these additional approvals.

Q: Are there any mechanical or form factor differences between substitute parts?

A: No. All substitute parts share identical mounting type (Panel Mount), actuator configuration (Rocker), pole count (2), and series designation (TA45). Physical installation and electrical connection are identical across all equivalent parts.

Q: How should I select between substitute parts with similar specifications?

A: Selection should prioritize inventory availability for procurement lead time optimization. Parts 4430.0978, 4430.0988, and 4430.1629 maintain inventory levels exceeding 1070 units. For applications requiring specific regulatory certifications, select from parts 4430.0572, 4430.1067, 4430.1068, or 4430.1805.

Q: Is the packaging format consistent across all substitute parts?

A: All substitute parts are supplied in Bulk packaging format, consistent with the primary part 4430.1789.

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