Techna Thermal Overloads for Contactors

Techna Brand: Techna

A range of thermal overload relays to fit Techna Ktec contactors.

  • Used for example in motor circuits, the relay will switch off on overload to protect the motor from damage.
  • Relay can be set for manual restart
  • Automatic restart after adequate cool down time
  • Available for current ratings 0.2A to 80A
  • Overload comes complete with 1 normally open and 1 normally closed auxiliary contact.
  • Approvals UL recognised and TUV certified CE and RoHS
Description Image Product Buy Pricing (Ex VAT) Current Rating Type Rated operation power at AC-3, 230 V
Techna OTEC15-00.9 Thermal Overload for Contactor 0.72A to 1.08a
Techna OTEC15-00.9 Thermal Overload for Contactor 0.72A to 1.08a
Standard range
Order code: 28-5312
MPN: OTEC15-00.9

Available to back orderBack-order availability date - 01/06/2026
1+ £12.37
5+ £10.33
Price per unit Ex VAT 		0.72 to 1.08A Overload relay N/A
Techna OTEC15-01.2 Thermal Overload for Contactor 0.96A to 1.44a
Techna OTEC15-01.2 Thermal Overload for Contactor 0.96A to 1.44a
Standard range
Order code: 28-5313
MPN: OTEC15-01.2

Available to back orderBack-order availability date - 01/06/2026
1+ £10.09
Price per unit Ex VAT 		0.96 to 1.44A Overload relay N/A
Techna OTEC15-01.7 Thermal Overload for Contactor 1.36A to 2.04a
Techna OTEC15-01.7 Thermal Overload for Contactor 1.36A to 2.04a
Standard range
Order code: 28-5314
MPN: OTEC15-01.7

Available to back orderBack-order availability date - 01/06/2026
1+ £12.37
5+ £10.33
Price per unit Ex VAT 		1.36 to 2.04A Overload relay N/A
Techna OTEC15-02.1 Thermal Overload for Contactor 1.68A to 2.52a
Techna OTEC15-02.1 Thermal Overload for Contactor 1.68A to 2.52a
Standard range
Order code: 28-5315
MPN: OTEC15-02.1

Available to back orderBack-order availability date - 01/06/2026
1+ £11.41
Price per unit Ex VAT 		1.68 to 2.52A Overload relay N/A
Techna OTEC15-04.4 Thermal Overload for Contactor 3.52A to 5.28a
Techna OTEC15-04.4 Thermal Overload for Contactor 3.52A to 5.28a
Standard range
Order code: 28-5317
MPN: OTEC15-04.4

Available to back orderBack-order availability date - 01/06/2026
1+ £15.22
5+ £13.43
Price per unit Ex VAT 		3.52 to 5.28A Overload relay N/A
Techna OTEC15-06.5 Thermal Overload for Contactor 5.2A to 7.8a
Techna OTEC15-06.5 Thermal Overload for Contactor 5.2A to 7.8a
Standard range
Order code: 28-5318
MPN: OTEC15-06.5

Available to back orderBack-order availability date - 01/06/2026
1+ £12.37
5+ £10.33
Price per unit Ex VAT 		5.2 to 7.8A Overload relay N/A
Techna OTEC15-09 Thermal Overload for Contactor 7.2A to 10.8a
Techna OTEC15-09 Thermal Overload for Contactor 7.2A to 10.8a
Standard range
Order code: 28-5319
MPN: OTEC15-09

Available to back orderBack-order availability date - 01/06/2026
1+ £14.86
5+ £12.38
Price per unit Ex VAT 		7.2 to 10.8A Overload relay N/A
Techna OTEC15-15 Thermal Overload for Contactor 12A to 18a
Techna OTEC15-15 Thermal Overload for Contactor 12A to 18a
Standard range
Order code: 28-5321
MPN: OTEC15-15

Available to back orderBack-order availability date - 01/06/2026
1+ £11.59
Price per unit Ex VAT 		12 to 18A Overload relay N/A
Techna OTEC40-09 Thermal Overload for Contactor 7.2A to 10.8a
Techna OTEC40-09 Thermal Overload for Contactor 7.2A to 10.8a
Standard range
Order code: 28-5326
MPN: OTEC40-09

Available to back orderBack-order availability date - 01/06/2026
1+ £13.39
5+ £11.20
Price per unit Ex VAT 		7.2 to 10.8A Overload relay N/A
Techna OTEC40-15 Thermal Overload for Contactor 12A to 18a
Techna OTEC40-15 Thermal Overload for Contactor 12A to 18a
Standard range
Order code: 28-5328
MPN: OTEC40-15

Available to back orderBack-order availability date - 01/06/2026
1+ £16.60
5+ £14.18
Price per unit Ex VAT 		12 to 18A Overload relay N/A
Techna OTEC40-21 Thermal Overload for Contactor 16.8A to 25.2a
Techna OTEC40-21 Thermal Overload for Contactor 16.8A to 25.2a
Standard range
Order code: 28-5329
MPN: OTEC40-21

Available to back orderBack-order availability date - 01/06/2026
1+ £13.41
5+ £11.20
Price per unit Ex VAT 		16.8 to 25.2A Overload relay N/A
Techna OTEC80-67 Thermal Overload for Contactor 53.6A to 80.4a
Techna OTEC80-67 Thermal Overload for Contactor 53.6A to 80.4a
Standard range
Order code: 28-5340
MPN: OTEC80-67

Available to back orderBack-order availability date - 01/06/2026
1+ £28.20
Price per unit Ex VAT 		53.6 to 80.4A Overload relay N/A
TypeMftrs partOrder code
Otec15 range
Fits contactors Ktec 11 & Ktec15
Current Setting range 0.72A to 1.08AOtec15–00.928–5312
Current Setting range 0.96A to 1.44AOtec15–01.228–5313
Current Setting range 1.36A to 2.04AOtec15–01.728–5314
Current Setting range 1.68A to 2.52AOtec15–02.128–5315
Current Setting range 3.52A to 5.28AOtec15–04.428–5317
Current Setting range 5.2A to 7.8AOtec15–06.528–5318
Current Setting range 7.2A to 10.8AOtec15–0928–5319
Current Setting range 12A to 18AOtec15–1528–5321


Otec40 Range
Fts Contactors Ktec16, Ktec21, Ktec25, Ktec30, Ktec35, Ktec40
Current Setting range 7.2A to 10.8AOtec40–0928–5326
Current Setting range 12A to 18AOtec40–1528–5328
Current Setting range 16.8A to 25.2AOtec40–2128–5329


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