SCHURTER 4430.273 Thermal Circuit Breaker Equivalent & Substitute Parts

Part Overview

The SCHURTER 4430.273 is an active thermal circuit breaker rated for 1A at 240V AC / 60V DC with rocker panel mount actuation and dual-pole configuration. This component is part of the TA45 series and maintains full compliance with CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, and UL1077 standards. Substitute parts are identified based on identical electrical ratings, mechanical mounting characteristics, and regulatory approvals to ensure direct interchangeability in circuit protection applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	4430.273
Manufacturer	SCHURTER Inc.
Series	TA45
Breaker Type	Thermal
Current Rating	1A
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
Approval Agencies	CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 4430.273 are qualified based on the following mandatory parameters:

Current Rating: 1A
Voltage Rating - AC: 240V
Voltage Rating - DC: 60V
Breaker Type: Thermal
Mounting Type: Panel Mount
Actuator Type: Rocker
Number of Poles: 2
Product Status: Active
RoHS Compliance: ROHS3 Compliant
Regulatory Approvals: CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077

All identified substitutes maintain these electrical and mechanical specifications. Parts are grouped into two series classifications: TA45 series (primary group) and TA35 series (alternative group), both meeting identical functional requirements.

Parameter Comparison

Part Number	Series	Current Rating	Voltage AC	Voltage DC	Breaker Type	Mounting	Actuator	Poles	Status	RoHS	Inventory
4430.273	TA45	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	1001 Pcs
4430.131	TA45	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	706 Pcs
4430.1143	TA45	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	676 Pcs
4430.1273	TA45	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	927 Pcs
4430.2411	TA45	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	1447 Pcs
4430.2862	TA45	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	1000 Pcs
4430.3022	TA45	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	1118 Pcs
4430.3089	TA45	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	945 Pcs
4435.0008	TA35	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	982 Pcs
4435.0465	TA35	1A	240V	60V	Thermal	Panel Mount	Rocker	2	Active	ROHS3	1110 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain active product status and full ROHS3 compliance. Selection between TA45 and TA35 series variants is determined by application-specific mechanical envelope requirements, as both series satisfy identical electrical specifications and regulatory certifications. Inventory availability ranges from 676 to 1447 pieces across all qualified substitutes, supporting procurement flexibility. Parts 4430.2411 and 4435.0465 offer highest current stock levels at 1447 and 1110 pieces respectively. Cross-series substitution between TA45 and TA35 variants is permissible where mechanical mounting geometry permits, as electrical performance and safety certifications remain equivalent.

Frequently Asked Questions (FAQ)

Q: Can TA45 series parts substitute for TA35 series parts in this application? A: Yes. Both series maintain identical electrical ratings (1A, 240V AC, 60V DC), thermal breaker operation, rocker actuation, and dual-pole configuration. Substitution is valid where panel mount geometry accommodates the alternative series form factor.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, meeting environmental and material restriction requirements.

Q: What regulatory approvals apply to all substitute parts? A: All substitute parts comply with CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, and UL1077 standards. These certifications are consistent across the entire substitute group.

Q: Does part number variation affect electrical performance? A: No. All substitute parts deliver identical electrical performance at 1A, 240V AC, and 60V DC ratings. Part number variations reflect manufacturing or packaging differences that do not impact functional specifications.

Q: Which substitute part offers best inventory availability? A: Part 4430.2411 (TA45 series) maintains the highest inventory level at 1447 pieces. Part 4435.0465 (TA35 series) provides 1110 pieces for TA35 series applications.

Q: Are there any compliance or certification differences between substitute parts? A: No. All substitute parts maintain identical RoHS status and regulatory approvals. Compliance profiles are uniform across the entire substitute group.

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