TS-709-15K Thermal Circuit Breaker Equivalent & Substitute Parts

Part Overview

The TS-709-15K is a thermal circuit breaker manufactured by SCHURTER Inc., rated for 15A at 250V AC and 50V DC with push-to-reset panel mount actuation. This part is classified as obsolete, making equivalent substitutes necessary for ongoing system maintenance and new designs. The TS series breaker provides single-pole thermal protection suitable for industrial and commercial applications requiring CSA C22.2 and UL1077 compliance.

Key Parameters

Parameter	Value
Manufacturer Part Number	TS-709-15K
Manufacturer	SCHURTER Inc.
Series	TS
Current Rating	15A
Voltage Rating - AC	250V
Voltage Rating - DC	50V
Breaker Type	Thermal
Mounting Type	Panel Mount
Actuator Type	Push to Reset
Number of Poles	1
Product Status	Obsolete
Approval Agencies	CSA C22.2, UL1077
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TS-709-15K is determined by the following critical parameters:

Mandatory Matching Parameters:

Current Rating: 15A
Voltage Rating - AC: 250V
Voltage Rating - DC: 50V
Breaker Type: Thermal
Mounting Type: Panel Mount
Actuator Type: Push to Reset
Number of Poles: 1

Compliance Consideration:

Approval agencies must include UL1077 and CSA C22.2 certifications

Substitute parts are grouped into two categories: parametric equivalents (exact electrical and mechanical specifications) and similar alternatives (minor voltage derating acceptable for specific applications).

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage AC	Voltage DC	Breaker Type	Mounting	Actuator	Poles	Status	Certifications
TS-709-15K	SCHURTER Inc.	15A	250V	50V	Thermal	Panel Mount	Push to Reset	1	Obsolete	CSA C22.2, UL1077
1140-E211-P1M1-15A	E-T-A	15A	250V	50V	Thermal	Panel Mount	Push to Reset	1	Active	CSA C22.2 No 235, IEC 60934, UL1077
1140-E211-P9M1-15A	E-T-A	15A	250V	50V	Thermal	Panel Mount	Push to Reset	1	Active	CSA C22.2 No 235, IEC 60934, UL1077
1140-G111-P1M1-15A	E-T-A	15A	250V	50V	Thermal	Panel Mount	Push to Reset	1	Active	CSA C22.2 No 235, IEC 60934, UL1077
1140-G151-P7M1-15A	E-T-A	15A	250V	50V	Thermal	Panel Mount	Push to Reset	1	Active	CSA C22.2 No 235, IEC 60934, UL1077
127-P10-H-KF-050022-15A	E-T-A	15A	250V	50V	Thermal	Panel Mount	Push to Reset	1	Active	CSA C22.2 No 235, GB 17701, IEC 60934, UL1077
127-P10-H-KF-15A	E-T-A	15A	250V	50V	Thermal	Panel Mount	Push to Reset	1	Active	CSA C22.2 No 235, GB 17701, IEC 60934, UL1077
127-P11-H-KF-15A	E-T-A	15A	250V	50V	Thermal	Panel Mount	Push to Reset	1	Active	CSA C22.2 No 235, GB 17701, IEC 60934, UL1077
157-K10-15A	E-T-A	15A	250V	50V	Thermal	Panel Mount	Push to Reset	1	Active	CSA C22.2 No 235, GB 17701, IEC 60934, UL1077
4404.0028	SCHURTER Inc.	15A	240V	48V	Thermal	Panel Mount	Push to Reset	1	Active	CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents):

The E-T-A 1140 series breakers (1140-E211-P1M1-15A, 1140-E211-P9M1-15A, 1140-G111-P1M1-15A, 1140-G151-P7M1-15A) and 127 series breakers (127-P10-H-KF-050022-15A, 127-P10-H-KF-15A, 127-P11-H-KF-15A) provide direct electrical and mechanical equivalence to the TS-709-15K. All are active products with full compliance to CSA C22.2 No 235, IEC 60934, and UL1077 standards. The E-T-A 157-K10-15A offers identical specifications with equivalent certifications.

Secondary Alternative:

The SCHURTER 4404.0028 operates at 240V AC and 48V DC, representing a minor voltage derating from the original 250V AC and 50V DC specifications. This part maintains the same 15A current rating, thermal breaker type, and panel mount configuration. Selection of this alternative is appropriate only when system voltage specifications align with the reduced ratings and when CSA C22.2 No 235 compliance is acceptable.

Product Status Consideration:

All recommended E-T-A substitutes carry active product status with established supply chains. The SCHURTER 4404.0028 is also active, providing continuity within the original manufacturer's product line.

Frequently Asked Questions (FAQ)

Q: Can I use the SCHURTER 4404.0028 as a direct replacement for the TS-709-15K?

A: The 4404.0028 is functionally compatible only if your system operates at 240V AC and 48V DC. The original TS-709-15K is rated for 250V AC and 50V DC. Verify your system voltage specifications before substitution.

Q: What is the difference between the E-T-A 1140 series variants?

A: All 1140 series variants (P1M1, P9M1, G111, G151) meet the identical electrical specifications of 15A at 250V AC and 50V DC with push-to-reset thermal actuation. Differences exist in internal design and packaging configurations. Selection among these variants depends on mechanical fit and mounting requirements specific to your application.

Q: Are the E-T-A 127 series breakers fully equivalent to the TS-709-15K?

A: Yes. The 127-P10-H-KF-050022-15A, 127-P10-H-KF-15A, and 127-P11-H-KF-15A all match the electrical ratings (15A, 250V AC, 50V DC), breaker type (thermal), mounting configuration (panel mount), and actuation method (push to reset). All carry UL1077 and CSA C22.2 certifications.

Q: What certifications must a substitute part maintain?

A: Substitute parts must retain UL1077 and CSA C22.2 certifications as minimum requirements. Additional certifications such as IEC 60934 and GB 17701 provide expanded regional compliance but do not affect functional equivalence.

Q: Does packaging type affect substitution eligibility?

A: Packaging type (bulk, box, or unspecified) does not affect electrical or mechanical compatibility. Packaging selection is determined by procurement and inventory management requirements, not by circuit protection performance.

Q: Why is the TS-709-15K classified as obsolete?

A: Obsolescence reflects the manufacturer's discontinuation of this specific model. Active equivalent alternatives from E-T-A and the SCHURTER 4404.0028 provide continued access to 15A thermal circuit breaker protection with current product support and supply availability.

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