TS-709-12K Thermal Circuit Breaker Equivalent & Substitute Parts

Part Overview

The TS-709-12K is a thermal circuit breaker manufactured by SCHURTER Inc., rated for 12A at 250V AC and 50V DC with push-to-reset panel mount actuation. This part is classified as obsolete. Due to its obsolete status, equivalent substitute parts from active product lines are available that maintain identical electrical and mechanical specifications, ensuring direct functional replacement in existing applications.

Substiute Parts

TS-709-12K

SCHURTER Inc.In Stock: 712TS-709-12K Datasheet

Current PartRFQ

4404.0023

SCHURTER Inc.In Stock: 15914404.0023 Datasheet

SimilarRFQ

TS-701-HT-12-K

SCHURTER Inc.In Stock: 1105TS-701-HT-12-K Datasheet

Parametric EquivalentRFQ

TS-701-HT-12H

SCHURTER Inc.In Stock: 1033TS-701-HT-12H Datasheet

Parametric EquivalentRFQ

1140-F111-P1M1-12A

E-T-AIn Stock: 6771140-F111-P1M1-12A Datasheet

Parametric EquivalentRFQ

1140-G111-P1M1-12A

E-T-AIn Stock: 9061140-G111-P1M1-12A Datasheet

Parametric EquivalentRFQ

1140-G151-P7M1-12A

E-T-AIn Stock: 7331140-G151-P7M1-12A Datasheet

Parametric EquivalentRFQ

127-P10-H-KF-12A

E-T-AIn Stock: 842127-P10-H-KF-12A Datasheet

Parametric EquivalentRFQ

2-5000-P10-H-12A

E-T-AIn Stock: 9712-5000-P10-H-12A Datasheet

Parametric EquivalentRFQ

CTB-B-B-12

Carling TechnologiesIn Stock: 1391CTB-B-B-12 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TS-709-12K are grouped into two categories based on electrical parameter alignment:

Parametric Equivalents (Identical Electrical & Mechanical Specifications): Parts that match all critical parameters: 12A current rating, 250V AC / 50V DC voltage ratings, thermal breaker type, push-to-reset actuation, single-pole configuration, and panel mount design. These parts are direct functional replacements.

Functional Equivalents (Minor Voltage Variance): The part 4404.0023 operates at 240V AC and 48V DC, representing a minor voltage reduction from the primary specification. This part maintains the same current rating, breaker type, actuation method, and mounting configuration, making it suitable for applications where the slightly lower voltage ratings are acceptable.

The substitution logic is determined exclusively by: current rating (12A), voltage ratings (250V AC / 50V DC or 240V AC / 48V DC), breaker type (thermal), actuator type (push to reset), mounting type (panel mount), and pole configuration (1-pole).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Identical Specifications): The E-T-A series parts (1140-F111-P1M1-12A, 1140-G111-P1M1-12A, 1140-G151-P7M1-12A, 127-P10-H-KF-12A, 2-5000-P10-H-12A) and Carling Technologies CTB-B-B-12 are all active products with full electrical and mechanical equivalence to the TS-709-12K. These parts carry expanded approval certifications including IEC 60934 and additional regulatory bodies, providing enhanced compliance documentation for new designs or regulatory audits.

SCHURTER Alternatives (Identical Specifications): The TS-701-HT-12-K and TS-701-HT-12H maintain complete parametric equivalence within the SCHURTER product line. Both are obsolete but available in inventory. These options preserve manufacturer continuity if preferred for supply chain or documentation purposes.

Functional Alternative (Reduced Voltage Ratings): The 4404.0023 from SCHURTER Inc. operates at 240V AC and 48V DC. This part is suitable only for applications where the lower voltage ratings are compatible with the circuit design. The part is active and carries comprehensive international certifications.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with lower voltage ratings (240V AC / 48V DC) in place of the TS-709-12K (250V AC / 50V DC)?

A: The 4404.0023 has lower voltage ratings and should only be used if your application circuit operates within those reduced voltage specifications. Direct substitution is not appropriate if the circuit requires the full 250V AC / 50V DC capability.

Q: Are all substitute parts panel mount with the same physical footprint?

A: All listed substitute parts are panel mount thermal circuit breakers with single-pole push-to-reset actuation. However, physical dimensions and mounting hole patterns are not provided in the specification data. Mechanical compatibility must be verified through detailed dimensional drawings before installation.

Q: What is the difference between the E-T-A 1140 series variants (F111, G111, G151)?

A: The provided specifications show identical electrical and mechanical parameters across all three variants. Differences between these part numbers relate to internal design features not detailed in the available parameter set. Consult E-T-A technical documentation for variant-specific characteristics.

Q: Why do some substitute parts have more approval certifications than the original TS-709-12K?

A: Substitute parts from active product lines often carry expanded regulatory approvals reflecting current certification standards. The TS-709-12K, being obsolete, reflects historical certification requirements. Additional certifications on substitute parts do not affect functional compatibility but may provide benefits for new regulatory submissions.

Q: Is the TS-701-HT-12-K a better choice than E-T-A alternatives since it is from the same manufacturer?

A: Both TS-701-HT-12-K and E-T-A alternatives are parametrically equivalent. Manufacturer selection should be based on supply chain availability, inventory status, and organizational procurement preferences. The E-T-A parts offer the advantage of active product status with ongoing manufacturer support.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in bulk packaging. The original TS-709-12K was supplied in standard packaging. Packaging format should be confirmed with the supplier based on procurement volume requirements.