SCHURTER 4430.1943 Thermal Circuit Breaker 3A 240VAC 60VDC Equivalent & Substitute Parts

Part Overview

The SCHURTER 4430.1943 is a thermal circuit breaker rated for 3A at 240V AC and 60V DC, featuring a rocker panel mount actuator with dual-pole configuration. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts within the TA45 and TA35 series maintain identical electrical and mechanical specifications, enabling direct replacement in applications requiring thermal protection at the specified voltage and current ratings.

Key Parameters

Parameter	Specification
Manufacturer	SCHURTER Inc.
Breaker Type	Thermal
Current Rating	3A
Voltage Rating - AC	240V
Voltage Rating - DC	60V
Mounting Type	Panel Mount
Actuator Type	Rocker
Number of Poles	2
Packaging	Bulk
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict parametric equivalence across the following criteria:

Current Rating: 3A (all substitutes match)
Voltage Rating - AC: 240V (all substitutes match)
Voltage Rating - DC: 60V (all substitutes match)
Breaker Type: Thermal (all substitutes match)
Mounting Type: Panel Mount (all substitutes match)
Actuator Type: Rocker (all substitutes match)
Number of Poles: 2 (all substitutes match)
Packaging: Bulk (all substitutes match)
Product Status: Active (all substitutes match)
RoHS Status: ROHS3 Compliant (all substitutes match)

All listed substitute parts meet these criteria and are classified as parametric equivalents. Series designation (TA45 or TA35) does not affect electrical or mechanical compatibility for the specified application parameters.

Parameter Comparison

Part Number	Series	Current Rating	Voltage AC	Voltage DC	Breaker Type	Mounting	Actuator	Poles	RoHS Status	Inventory (Pcs)
4430.1943	TA45	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	1174
4430.0545	TA45	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	767
4430.0683	TA45	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	718
4430.1486	TA45	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	916
4430.2103	TA45	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	942
4430.2599	TA45	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	900
4430.3091	TA45	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	995
4430.3377	TA45	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	1135
4430.3416	TA45	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	1151
4435.0022	TA35	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	1677
4435.0127	TA35	3A	240V	60V	Thermal	Panel Mount	Rocker	2	ROHS3 Compliant	736

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original 4430.1943 specification. Parts bearing CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, and UL1077 certifications (4430.0683, 4430.1486, 4430.2103, and 4435.0022) provide documented approval agency validation. Selection between TA45 series variants (4430.xxxx) and TA35 series variants (4435.xxxx) depends on mechanical form factor requirements within the target application enclosure, as both series maintain identical electrical performance at the specified 3A, 240VAC, 60VDC rating.

Frequently Asked Questions (FAQ)

Q: Can 4435.0022 (TA35 series) replace 4430.1943 (TA45 series)?

A: Yes. Both parts are parametric equivalents with identical electrical specifications: 3A current rating, 240V AC, 60V DC, thermal breaker type, rocker actuator, dual-pole configuration, and panel mount design. Series designation reflects mechanical form factor only and does not affect electrical compatibility.

Q: What determines if a part is a valid substitute?

A: Substitution requires matching across all key parameters: current rating (3A), voltage ratings (240V AC / 60V DC), breaker type (thermal), mounting type (panel mount), actuator type (rocker), pole count (2), and product status (Active). All listed parts meet these criteria.

Q: Are there differences in approval certifications among the substitutes?

A: Some parts carry documented certifications (CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077) while others list certifications as vendor-defined or not applicable. Certification requirements depend on the target application's regulatory jurisdiction and should be confirmed against project specifications.

Q: Does inventory level affect substitution eligibility?

A: No. Inventory quantities do not determine electrical or mechanical compatibility. Inventory levels are provided for procurement planning purposes only.

Q: Can parts from different series (TA45 vs TA35) be mixed in the same application?

A: Yes, provided the mechanical form factor of the selected series accommodates the panel cutout and mounting configuration of the target enclosure. Electrical performance is identical across both series at the specified ratings.

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