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AC Protection & Motor Control in HVAC Solutions

Littelfuse AC Protection and Motor Control in HVAC Solutions are essential to improve energy efficiency in commercial and industrial buildings. These solutions include fuses, surge protection devices, voltage monitors, transducers, sensors, and time delay relays. Littelfuse AC Protection and Motor Control in HVAC products are designed for control units, rectifiers, inverters, communication interfaces, and user interfaces.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENSOR SM103J1F Littelfuse 1: £1.33 2,400In Stock	Mfr. Part No. SM103J1F Mouser Part No 576-SM103J1F	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENSOR Learn More about Littelfuse surface mount thermistors	Datasheet	2,400In Stock	£1.33 £1.27 £1.07 £1.05 View £0.952 £0.849 £0.751	Min.: 1 Mult.: 1
Proximity Sensors 59140 030 PROX SENSOR 59140-030 Littelfuse 1: £4.52 649In Stock	Mfr. Part No. 59140-030 Mouser Part No 934-59140-030	Littelfuse	Proximity Sensors 59140 030 PROX SENSOR Learn More about Littelfuse sensors	Datasheet	649In Stock	£4.52 £4.16 £3.68 £3.41 View £3.09 £2.92 £2.85 £2.84	Min.: 1 Mult.: 1
Proximity Sensors 59140-1-T-02-A SENS 59140-1-T-02-A Littelfuse 1: £2.58 641In Stock	Mfr. Part No. 59140-1-T-02-A Mouser Part No 934-59140-1-T-02-A	Littelfuse	Proximity Sensors 59140-1-T-02-A SENS Learn More about Littelfuse reed sensors	Datasheet	641In Stock	£2.58 £2.38 £2.13 £2.07 View £1.91 £1.87 £1.78	Min.: 1 Mult.: 1
Proximity Sensors 59140-1-U-02-A SENS 59140-1-U-02-A Littelfuse 1: £3.06 5,203In Stock	Mfr. Part No. 59140-1-U-02-A Mouser Part No 934-59140-1-U-02-A	Littelfuse	Proximity Sensors 59140-1-U-02-A SENS Learn More about Littelfuse reed sensors	Datasheet	5,203In Stock	£3.06 £2.37 £1.93 £1.86 £1.77	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-020 Littelfuse 1: £3.25 1,389In Stock	Mfr. Part No. 59140-020 Mouser Part No 934-59140-020	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse sensors	Datasheet	1,389In Stock	£3.25 £2.51 £2.05 £1.98	Min.: 1 Mult.: 1
Proximity Sensors 59140-3-S-02-F SENS 59140-3-S-02-F Littelfuse 1: £4.16 435In Stock	Mfr. Part No. 59140-3-S-02-F Mouser Part No 934-59140-3-S-02-F	Littelfuse	Proximity Sensors 59140-3-S-02-F SENS Learn More about Littelfuse reed sensors	Datasheet	435In Stock	£4.16 £3.74 £3.66 £3.45 View £2.92 £2.83	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors 1K OHM +/-10% SM102B1K Littelfuse 1: £1.20 691In Stock	Mfr. Part No. SM102B1K Mouser Part No 803-SM102B1K	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 1K OHM +/-10% Learn More about Littelfuse surface mount thermistors	Datasheet	691In Stock	£1.20 £1.15 £0.96 £0.943 View £0.856 £0.766 £0.719 £0.664	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 2K OHM 10% MELF SM202F1K Littelfuse 1: £1.48 459In Stock	Mfr. Part No. SM202F1K Mouser Part No 576-SM202F1K	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 2K OHM 10% MELF Learn More about Littelfuse surface mount thermistors	Datasheet	459In Stock	£1.48 £1.15 £0.96 £0.943 View £0.856 £0.744 £0.711 £0.674	Min.: 1 Mult.: 1
Proximity Sensors NO 12-18AT 750mm 59140-1-S-04-E Littelfuse 1: £2.41 478In Stock	Mfr. Part No. 59140-1-S-04-E Mouser Part No 934-59140-1-S-04-E	Littelfuse	Proximity Sensors NO 12-18AT 750mm Learn More about Littelfuse reed sensors	Datasheet	478In Stock	£2.41 £2.16 £1.96 £1.87 View £1.80 £1.65 £1.60 £1.54	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors 100K OHM 2% RING LUG ASMBLY USUR1000-104G-06 Littelfuse 1: £10.00 20In Stock	Mfr. Part No. USUR1000-104G-06 Mouser Part No 576-USUR1000-104G-06	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors 100K OHM 2% RING LUG ASMBLY Learn More about Littelfuse thermistor probes assemblies	Datasheet	20In Stock	£10.00 £8.83 £7.92 £7.50 View £6.95 £6.46 £6.04 £5.86	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 2% LUG USUR1000-203G-06 Littelfuse 1: £10.00 28In Stock	Mfr. Part No. USUR1000-203G-06 Mouser Part No 576-USUR1000-203G-06	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 20K OHM 2% LUG Learn More about Littelfuse thermistor probes assemblies	Datasheet	28In Stock	£10.00 £8.84 £7.93 £7.51 View £7.16 £6.74 £6.36 £6.25	Min.: 1 Mult.: 1
Proximity Sensors 59140-4-U-02-A SENS 59140-4-U-02-A Littelfuse 1: £4.46 375In Stock	Mfr. Part No. 59140-4-U-02-A Mouser Part No 934-59140-4-U-02-A	Littelfuse	Proximity Sensors 59140-4-U-02-A SENS Learn More about Littelfuse reed sensors	Datasheet	375In Stock	£4.46 £4.02 £3.65 £3.51 View £3.31 £2.75	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 2% LUG USUR1000-303G-06 Littelfuse 1: £7.50 1In Stock 50Expected 25/11/2026	Mfr. Part No. USUR1000-303G-06 Mouser Part No 576-USUR1000-303G-06	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors NTC THERMISTOR 30K OHM 2% LUG Learn More about Littelfuse thermistor probes assemblies	Datasheet	1In Stock 50Expected 25/11/2026	£7.50	Min.: 1 Mult.: 1
Sensor Fixings & Accessories MAGNET ACTUATOR FOR 59140 AND 59141 57140-000 Littelfuse 1: £1.58 37,237In Stock	Mfr. Part No. 57140-000 Mouser Part No 934-57140-000	Littelfuse	Sensor Fixings & Accessories MAGNET ACTUATOR FOR 59140 AND 59141 Learn More about Littelfuse magnetic actuators	Datasheet	37,237In Stock	£1.58 £1.41 £1.27 £1.21 View £1.13 £1.07 £1.05	Min.: 1 Mult.: 1
Proximity Sensors Actuator for 59140 and 59141 59140-010 Littelfuse 1: £2.63 9,831In Stock	Mfr. Part No. 59140-010 Mouser Part No 934-59140-010	Littelfuse	Proximity Sensors Actuator for 59140 and 59141 Learn More about Littelfuse sensors	Datasheet	9,831In Stock	£2.63 £2.35 £2.12 £2.04 £1.97	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-1-S-02-A Littelfuse 1: £2.82 7,117In Stock	Mfr. Part No. 59140-1-S-02-A Mouser Part No 934-59140-1-S-02-A	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse reed sensors	Datasheet	7,117In Stock	£2.82 £2.53 £2.29 £2.20 View £2.11 £1.95 £1.89	Min.: 1 Mult.: 1
Proximity Sensors 59140-1-S-02-F SENS 59140-1-S-02-F Littelfuse 1: £2.82 7,847In Stock	Mfr. Part No. 59140-1-S-02-F Mouser Part No 934-59140-1-S-02-F	Littelfuse	Proximity Sensors 59140-1-S-02-F SENS Learn More about Littelfuse reed sensors	Datasheet	7,847In Stock	£2.82 £2.53 £2.29 £2.20 View £2.11 £1.95 £1.89	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-040 Littelfuse 1: £3.91 1,819In Stock	Mfr. Part No. 59140-040 Mouser Part No 934-59140-040	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse sensors	Datasheet	1,819In Stock	£3.91 £3.52 £3.20 £3.08 View £2.97 £2.75 £2.71	Min.: 1 Mult.: 1
Proximity Sensors NO 12-18AT 500mm TIN 59140-1-S-03-A Littelfuse 1: £2.30 724In Stock	Mfr. Part No. 59140-1-S-03-A Mouser Part No 934-59140-1-S-03-A	Littelfuse	Proximity Sensors NO 12-18AT 500mm TIN Learn More about Littelfuse reed sensors	Datasheet	724In Stock	£2.30 £2.07 £1.87 £1.80 View £1.72 £1.61	Min.: 1 Mult.: 1
Proximity Sensors 200V 1000mm TINNED LEADS 59140-1-S-05-A Littelfuse 1: £4.47 573In Stock	Mfr. Part No. 59140-1-S-05-A Mouser Part No 934-59140-1-S-05-A	Littelfuse	Proximity Sensors 200V 1000mm TINNED LEADS Learn More about Littelfuse reed sensors	Datasheet	573In Stock	£4.47 £4.02 £3.67 £3.53 View £3.40 £3.38	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-1-T-02-F Littelfuse 1: £2.57 1,099In Stock	Mfr. Part No. 59140-1-T-02-F Mouser Part No 934-59140-1-T-02-F	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse reed sensors	Datasheet	1,099In Stock	£2.57 £2.30 £2.08 £2.00 View £1.91 £1.81	Min.: 1 Mult.: 1
Proximity Sensors 200V 1000mm TINNED LEADS 59140-1-T-05-A Littelfuse 1: £4.73 500In Stock	Mfr. Part No. 59140-1-T-05-A Mouser Part No 934-59140-1-T-05-A	Littelfuse	Proximity Sensors 200V 1000mm TINNED LEADS Learn More about Littelfuse reed sensors	Datasheet	500In Stock	£4.73 £4.26 £3.88 £3.74 View £3.61 £3.38	Min.: 1 Mult.: 1
Proximity Sensors PROX SENSOR MINI FLANGE MOUNT 59140-1-V-02-A Littelfuse 1: £2.82 843In Stock	Mfr. Part No. 59140-1-V-02-A Mouser Part No 934-59140-1-V-02-A	Littelfuse	Proximity Sensors PROX SENSOR MINI FLANGE MOUNT Learn More about Littelfuse reed sensors	Datasheet	843In Stock	£2.82 £2.53 £2.29 £2.20 View £2.11 £1.95 £1.89	Min.: 1 Mult.: 1
Proximity Sensors 59140-3-S-02-A SENS 59140-3-S-02-A Littelfuse 1: £5.05 385In Stock	Mfr. Part No. 59140-3-S-02-A Mouser Part No 934-59140-3-S-02-A	Littelfuse	Proximity Sensors 59140-3-S-02-A SENS Learn More about Littelfuse reed sensors	Datasheet	385In Stock	£5.05 £3.88 £3.22	Min.: 1 Mult.: 1
Proximity Sensors 59140-4-S-02-A SENS 59140-4-S-02-A Littelfuse 1: £3.72 624In Stock 4,600Expected 06/01/2027	Mfr. Part No. 59140-4-S-02-A Mouser Part No 934-59140-4-S-02-A	Littelfuse	Proximity Sensors 59140-4-S-02-A SENS Learn More about Littelfuse reed sensors	Datasheet	624In Stock 4,600Expected 06/01/2027	£3.72 £3.35 £3.04 £2.92 View £2.82 £2.76	Min.: 1 Mult.: 1

AC Protection & Motor Control in HVAC Solutions

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AC Protection & Motor Control in HVAC Solutions

Types of Sensors