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Showing Results For: Thermal Breakers

Thermal Breakers

Thermal breakers are essential protective devices designed to prevent excessive currents from the circuits and protect them from short-circuits or tripping. Unlike fuses, these breakers work similarly; however, a thermal breaker consists of a switch that can be reset in case of tripping. These safety devices can effectively avoid fires, damage, or other electrical dangers resulting from voltage fluctuations.

How many types of thermal breakers are there?

Thermal breakers are classified into two main types, i.e., thermal magnetic circuit breakers and thermal automotive circuit breakers.

  • Thermal magnetic circuit breakers

These circuit breakers are designed to protect circuits from overcurrent with integrated electromagnetic and bimetallic strips that respond by tripping or opening the circuit. They protect the circuits and quickly respond to electrical surges or poor grounding. 

  • Thermal automotive circuit breakers

Unlike magnetic circuit breakers, thermal automotive circuit breakers disrupt the current flow in automotive circuits to prevent faults like short circuits or overloads. These circuit breakers are designed for automotives, where engines remain on for a shorter period of time.

What is the difference between thermal circuit breakers and fuses?

Generally, thermal circuit breakers provide sophisticated circuit protection with automated switches that disrupt the current flow in the event of short circuits or overloads. The main difference is that fuses burn out and need replacement, while circuit breakers only require reset.

Applications of thermal circuit breakers, magnetic circuit breakers, and automotive circuit breakers:

These protective circuit breakers are primarily designed to protect electrical circuits from damage during electric shocks and overloads. 

However, they work in different environments, such as magnetic circuit breakers are suitable for use in distribution boards, while thermal automotive circuit breakers are widely suited for vehicles, including:

  • Cars
  • Vans
  • Buses
  • Boats, etc.

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Manufacturer Part No
Name
Availability
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Legrand
Rohs Verified
409215, Legrand
42 In Stock
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1 +
£ 160.32
Legrand
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409273, Legrand
43 In Stock
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1 +
£ 203.15
Legrand
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410753, Legrand
15 In Stock
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1 +
£ 279.80
Schurter
Rohs Verified
4430.3652, Schurter
70 In Stock
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1 +
£ 36.86
Legrand
Rohs Verified
409508, Legrand
10 In Stock
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1 +
£ 832.65
Schurter
Rohs Verified
4435.0189, Schurter
71 In Stock
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1 +
£ 15.83
Schurter
Rohs Verified
4400.0050, Schurter
68 In Stock
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1 +
£ 5.87
Schurter
Rohs Verified
4400.0279, Schurter
69 In Stock
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1 +
£ 5.87
Legrand
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401013, Legrand
6 In Stock
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1 +
£ 509.99
Rohs Verified
118964 NZMN2-ME90-NA, Eaton
1 In Stock
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1 +
£ 1065.09
118966 NZMN2-ME200-NA, Eaton
60 In Stock
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1 +
£ 1841.66
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142424 NZMH2-ME90-BT-NA, Eaton
9 In Stock
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1 +
£ 1392.84
Rohs Verified
118968 NZMH2-ME140-NA, Eaton
62 In Stock
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1 +
£ 1800.10
Rohs Verified
142421 NZMN2-ME90-BT-NA, Eaton
6 In Stock
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1 +
£ 1191.69
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118965 NZMN2-ME140-NA, Eaton
59 In Stock
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1 +
£ 1393.66
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118967 NZMH2-ME90-NA, Eaton
1 In Stock
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1 +
£ 1254.20
118969 NZMH2-ME200-NA, Eaton
63 In Stock
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£ 2322.08
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142425 NZMH2-ME140-BT-NA, Eaton
10 In Stock
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1 +
£ 1844.98
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142422 NZMN2-ME140-BT-NA, Eaton
7 In Stock
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£ 1411.13
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142423 NZMN2-ME200-BT-NA, Eaton
8 In Stock
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1 +
£ 1907.24
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142426 NZMH2-ME200-BT-NA, Eaton
11 In Stock
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1 +
£ 2386.07
Schneider Electric
Rohs Verified
GV2ME016, Schneider Electric
2 In Stock
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1 +
£ 136.08
Schneider Electric
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GV3P256, Schneider Electric
1 In Stock
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1 +
£ 395.98
Schneider Electric
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GV2ME046, Schneider Electric
1 In Stock
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1 +
£ 108.30
Schneider Electric
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GV2ME166, Schneider Electric
89 In Stock
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£ 126.28
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New Items
New items
118968, Eaton

118968, Eaton

The Eaton makes this Circuit breaker which is developed for use in motor circuits with contactor. The mounting is always flexible due to the modular function groups, with electronic release for the motor protection with phase failure sensitivity. These motor protection circuit breaker from NZM..-ME..NA series cover all applications with only four compact sizes, and this device is rated for 140 A at 690 Vac and it has 3 poles. It comes with additional motor protective features Adjustable overload releases Ir and adjustable time delay setting to overcome current peaks
New items
GV2ME016, Schneider Electric

GV2ME016, Schneider Electric

The Schneider Electric Motor circuit breaker with thermal magnetic technology. It can operate in any position. Lugs terminals Ambient air temperature for storage -40 to 80 °C IP degree of protection IP20
New items
GV3P256, Schneider Electric

GV3P256, Schneider Electric

The Schneider Electric Motor circuit breaker with thermal magnetic technology. It can operate in any position. Lugs terminals Ambient air temperature for storage -40 to 80 °C IP degree of protection IP20
New items
W28-XQ1A-3, TE Connectivity

W28-XQ1A-3, TE Connectivity

TE Connectivity - W28 Series
New items
3-128-232, Schurter

3-128-232, Schurter

The Schurter thermal circuit breaker has a 2 pole in snap-in version positively trip-free release method of operation acc. to IEC: S-type different rocker and flange colours and 10A current. Unique UL rating of 277 VAC Finely graded rated currents High configurability (rocker colours, lettering) Appealing design
New items
3-128-234, Schurter

3-128-234, Schurter

The Schurter thermal circuit breaker has a 2 pole in snap-in version positively trip-free release method of operation acc. to IEC: S-type different rocker and flange colours and 10A current. Unique UL rating of 277 VAC Finely graded rated currents High configurability (rocker colours, lettering) Appealing design
New items
2G8UM, Altech

2G8UM, Altech

Altech V-EA Series DIN Rail Thermal Magnetic Circuit Breakers are found in most distribution boards. The thermal portion provides an "inverse time" response feature, which trips the circuit breaker sooner for larger overcurrent’s. The Altech V-EA series are primarily DIN Rail mounted and provide a compact solution to your protection requirements. All models are highly reliable and excellent quality. DIN Rail Mounted 17.5mm width per pole Thermal Magnetic 10kA Short Circuit Withstand Capacity Thermal Magnetic Convertible All CBEs have blade terminals and have an insulation resistance greater than 100MΩ (MegaOhms).
New items
FC67203, Cliff Electronics

FC67203, Cliff Electronics

Cliff Electronics Circuit Protection Devices - Automatic Reset AN Series Cliff Electronics automatic reset AN series of circuit protection devices offer a comprehensive solution to a variety of circuit protection requirements. The AN series is available as a snap-in type, with PC mounting. With a range of values up to 12A, the AN series is designed to protect audio speaker systems, amplifiers and power supplies. High current accuracy Snap action Automatic reset Long life PBT resin enclosure Highly reliable
New items
3-128-197, Schurter

3-128-197, Schurter

The Schurter thermal circuit breaker has a 1 pole in snap-in version positively trip-free release method of operation acc. to IEC: S-type different rocker and flange colours and 10A current. Unique UL rating of 277 VAC Finely graded rated currents High configurability (rocker colours, lettering) Appealing design
New items
2EU1.6, Altech

2EU1.6, Altech

Altech V-EA Series DIN Rail Thermal Magnetic Circuit Breakers are found in most distribution boards. The thermal portion provides an "inverse time" response feature, which trips the circuit breaker sooner for larger overcurrent’s. The Altech V-EA series are primarily DIN Rail mounted and provide a compact solution to your protection requirements. All models are highly reliable and excellent quality. DIN Rail Mounted 17.5mm width per pole Thermal Magnetic 10kA Short Circuit Withstand Capacity Thermal Magnetic Convertible All CBEs have blade terminals and have an insulation resistance greater than 100MΩ (MegaOhms).
New items
2E5UM, Altech

2E5UM, Altech

Altech V-EA Series DIN Rail Thermal Magnetic Circuit Breakers are found in most distribution boards. The thermal portion provides an "inverse time" response feature, which trips the circuit breaker sooner for larger overcurrent’s. The Altech V-EA series are primarily DIN Rail mounted and provide a compact solution to your protection requirements. All models are highly reliable and excellent quality. DIN Rail Mounted 17.5mm width per pole Thermal Magnetic 10kA Short Circuit Withstand Capacity Thermal Magnetic Convertible All CBEs have blade terminals and have an insulation resistance greater than 100MΩ (MegaOhms).
New items
FC6605A, Cliff Electronics

FC6605A, Cliff Electronics

Cliff Electronics Circuit Protection Devices - Manual Reset A-0709 Series Cliff Electronics manual reset A-0709 series of circuit protection devices offer a comprehensive solution to a variety of circuit protection requirements. The A-0709 series is available in either M10 or snap-in types, with a range of values up to 16A. Applications include power supplies, amplifiers, UPS, regulators and generators. Two mounting options Manual reset Long life Highly reliable
FAQs
We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like Thermal Breakers and all others.
You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding Thermal Breakers or any other product.
This depends on the Thermal Breakers individual product and information that can be found on our website.
Yes, we offer special discounts on orders above £200 for Thermal Breakers and all other products.
UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including Thermal Breakers.
Yes. We keep updating our stock frequently and if a product like Thermal Breakers is not in stock then we will let you know.