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Smart Metering Solutions

Littelfuse Smart Metering Solutions help designers implement more reliable and safer smart meters. Littelfuse solutions for smart meters allow designers to bring Internet of Things technology to the key functions of a smart metering system.

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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.
Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay LCA712 IXYS Integrated Circuits 1: £8.34 848In Stock	Mfr. Part No. LCA712 Mouser Part No 849-LCA712	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP-NO SS OptoMOS Relay Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	848In Stock	£8.34 £7.43 £7.10 £6.08 £5.78	Min.: 1 Mult.: 1
Magnetic/Reed Switches NO 10-15AT 7.5mm Overmolded Sensor 59166-1-S-00-C Littelfuse 1: £1.25 125In Stock 3,000Expected 23/12/2026	Mfr. Part No. 59166-1-S-00-C Mouser Part No 934-59166-1-S-00-C	Littelfuse	Magnetic/Reed Switches NO 10-15AT 7.5mm Overmolded Sensor Learn More about Littelfuse 59166 reed switches	Datasheet	125In Stock 3,000Expected 23/12/2026	£1.25 £1.09 £0.995 £0.908 View £0.796 £0.746 £0.706 £0.678	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDSM-4R 5277 17-23 MDSM-4R-17-23 Littelfuse 1: £1.08 1,663In Stock	Mfr. Part No. MDSM-4R-17-23 Mouser Part No 934-MDSM-4R17-23	Littelfuse	Magnetic/Reed Switches MDSM-4R 5277 17-23 Learn More about Littelfuse reed switches	Datasheet	1,663In Stock	Cut Tape £1.08 £0.925 £0.856 £0.766 View Reel £0.63 £0.704 £0.672 £0.665 £0.63 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Magnetic/Reed Switches NO 20-25AT 5mm Overmolded Sensor 59166-1-U-00-D Littelfuse 1: £1.06 1,185In Stock	Mfr. Part No. 59166-1-U-00-D Mouser Part No 934-59166-1-U-00-D	Littelfuse	Magnetic/Reed Switches NO 20-25AT 5mm Overmolded Sensor Learn More about Littelfuse 59166 reed switches	Datasheet	1,185In Stock	Cut Tape £1.06 £0.934 £0.856 £0.773 View Reel £0.568 £0.723 £0.688 £0.615 £0.568	Min.: 1 Mult.: 1 : 1,500
Magnetic/Reed Switches MDSR-10 20-25 MDSR-10-20-25 Littelfuse 1: £1.05 964In Stock	Mfr. Part No. MDSR-10-20-25 Mouser Part No 934-MDSR-1020-25	Littelfuse	Magnetic/Reed Switches MDSR-10 20-25 Learn More about Littelfuse mdsr 10 reed switches	Datasheet	964In Stock	£1.05 £0.882 £0.826 £0.732 View £0.679 £0.643 £0.608 £0.562 £0.546	Min.: 1 Mult.: 1
Magnetic/Reed Switches NO 7-13AT SMT MDSM-4R-7-13 Littelfuse 1: £0.978 1,565In Stock	Mfr. Part No. MDSM-4R-7-13 Mouser Part No 934-MDSM-4R-7-13	Littelfuse	Magnetic/Reed Switches NO 7-13AT SMT Learn More about Littelfuse sensors	Datasheet	1,565In Stock	Cut Tape £0.978 £0.871 £0.818 £0.78 Reel £0.78	Min.: 1 Mult.: 1 : 3,000
Magnetic/Reed Switches SPST 140VAC, 15 AT-20 AT Range MDSR-10-15-20 Littelfuse 1: £1.05 1,781In Stock	Mfr. Part No. MDSR-10-15-20 Mouser Part No 934-MDSR-1015-20	Littelfuse	Magnetic/Reed Switches SPST 140VAC, 15 AT-20 AT Range Learn More about Littelfuse mdsr 10 reed switches	Datasheet	1,781In Stock	£1.05 £0.882 £0.826 £0.732 View £0.679 £0.636 £0.623	Min.: 1 Mult.: 1
Magnetic/Reed Switches SWITCH REED MDSM-4R-12-18 Littelfuse 1: £1.07 25,424In Stock	Mfr. Part No. MDSM-4R-12-18 Mouser Part No 934-MDSM-4R12-18	Littelfuse	Magnetic/Reed Switches SWITCH REED Learn More about Littelfuse reed switches	Datasheet	25,424In Stock	Cut Tape £1.07 £0.925 £0.856 £0.766 View Reel £0.624 £0.704 £0.668 £0.624 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET LCA712S IXYS Integrated Circuits 1: £8.34 283In Stock	Mfr. Part No. LCA712S Mouser Part No 849-LCA712S	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	283In Stock	£8.34 £7.43 £7.10 £6.84 View £6.57 £6.29 £6.07 £5.69 Quote	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDSR-10 10-15 MDSR-10-10-15 Littelfuse 1: £1.05 2,654In Stock	Mfr. Part No. MDSR-10-10-15 Mouser Part No 934-MDSR-1010-15	Littelfuse	Magnetic/Reed Switches MDSR-10 10-15 Learn More about Littelfuse mdsr 10 reed switches	Datasheet	2,654In Stock	£1.05 £0.882 £0.826 £0.732 View £0.679 £0.678 £0.674 £0.623	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount SPST-NO 6PIN DIP PLA192 IXYS Integrated Circuits 1: £5.46 66In Stock 250Expected 23/07/2027	Mfr. Part No. PLA192 Mouser Part No 849-PLA192	IXYS Integrated Circuits	Solid State Relays - PCB Mount SPST-NO 6PIN DIP	Datasheet	66In Stock 250Expected 23/07/2027	£5.46 £4.86 £4.64 £4.48 View £4.32 £4.11 £3.97 £3.83	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA PLA192STR IXYS Integrated Circuits 1: £5.40 34In Stock 2,000Expected 26/07/2027	Mfr. Part No. PLA192STR Mouser Part No 849-PLA192STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	34In Stock 2,000Expected 26/07/2027	Cut Tape £5.40 £4.94 £4.58 £4.36 View Reel £3.59 £4.16 £3.95 £3.82 £3.59 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Magnetic/Reed Switches NO 15-20AT 6.5mm Overmolded Sensor 59166-1-T-00-C Littelfuse 1: £1.20 245In Stock	Mfr. Part No. 59166-1-T-00-C Mouser Part No 934-59166-1-T-00-C	Littelfuse	Magnetic/Reed Switches NO 15-20AT 6.5mm Overmolded Sensor Learn More about Littelfuse 59166 reed switches	Datasheet	245In Stock	Cut Tape £1.20 £1.03 £0.882 £0.796 Reel £0.694 View £0.746 £0.662 £0.651	Min.: 1 Mult.: 1 : 1,000
Magnetic/Reed Switches NO 15-20AT 6.5mm Overmolded Sensor 59166-1-T-00-D Littelfuse 1: £1.01 1,365In Stock	Mfr. Part No. 59166-1-T-00-D Mouser Part No 934-59166-1-T-00-D	Littelfuse	Magnetic/Reed Switches NO 15-20AT 6.5mm Overmolded Sensor Learn More about Littelfuse 59166 reed switches	Datasheet	1,365In Stock	Cut Tape £1.01 £0.863 £0.803 £0.711 View Reel £0.581 £0.658 £0.622 £0.581 £0.581	Min.: 1 Mult.: 1 : 1,500
Magnetic/Reed Switches NO 30-35AT MDSR-10-30-35 Littelfuse 1: £1.05 971In Stock	Mfr. Part No. MDSR-10-30-35 Mouser Part No 934-MDSR-10-30-35	Littelfuse	Magnetic/Reed Switches NO 30-35AT Learn More about Littelfuse mdsr 10 reed switches	Datasheet	971In Stock	£1.05 £0.882 £0.826 £0.818 View £0.773 £0.608 £0.601	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDSM-4B 5276 12-18 MDSM-4B-12-18 Littelfuse 1: £1.16 20In Stock	Mfr. Part No. MDSM-4B-12-18 Mouser Part No 934-MDSM-4B12-18	Littelfuse	Magnetic/Reed Switches MDSM-4B 5276 12-18 Learn More about Littelfuse reed switches	Datasheet	20In Stock	£1.16 £0.934 £0.818 £0.751 View £0.723 £0.685 £0.642 £0.613	Min.: 1 Mult.: 1
Magnetic/Reed Switches MDSM-4B 5276 32-38 MDSM-4B-32-38 Littelfuse 1: £1.05 321In Stock	Mfr. Part No. MDSM-4B-32-38 Mouser Part No 934-MDSM-4B32-38	Littelfuse	Magnetic/Reed Switches MDSM-4B 5276 32-38 Learn More about Littelfuse reed switches	Datasheet	321In Stock	£1.05 £0.826 £0.732 £0.668 View £0.642 £0.608 £0.601	Min.: 1 Mult.: 1
Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET LCA712STR IXYS Integrated Circuits 1: £8.44 1,300Expected 21/01/2027	Mfr. Part No. LCA712STR Mouser Part No 849-LCA712STR	IXYS Integrated Circuits	Solid State Relays - PCB Mount 1-Form-A 60V 1000 mA SSR w/optic MOSFET Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,300Expected 21/01/2027	Cut Tape £8.44 £7.53 £7.18 £6.92 View Reel £5.63 £6.63 £6.20 £5.98 £5.63 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA PLA192S IXYS Integrated Circuits 1: £5.32 1,825Expected 08/02/2027	Mfr. Part No. PLA192S Mouser Part No 849-PLA192S	IXYS Integrated Circuits	Solid State Relays - PCB Mount Single-Pole Relay 600V 150mA Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	1,825Expected 08/02/2027	£5.32 £4.74 £4.53 £4.37 View £4.22 £4.03	Min.: 1 Mult.: 1
Magnetic/Reed Switches 200V 16mm GULL WING REEL 59166-1-S-00-D Littelfuse 1: £0.908 9,000On Order	Mfr. Part No. 59166-1-S-00-D Mouser Part No 934-59166-1-S-00-D	Littelfuse	Magnetic/Reed Switches 200V 16mm GULL WING REEL Learn More about Littelfuse 59166 reed switches	Datasheet	9,000On Order On Order Ship Dates Mfr. No: 59166-1-S-00-D Stock: 0 On Order: 4,500 Expected 12/11/2026 4,500 Expected 04/01/2027 Factory Lead Time: 23 Weeks	Cut Tape £0.908 £0.773 £0.716 £0.638 View Reel £0.568 £0.591 £0.568 £0.568	Min.: 1 Mult.: 1 : 1,500
Magnetic/Reed Switches SWITCH REED MDSM-4R-32-38 Littelfuse 3,000: £0.677 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. MDSM-4R-32-38 Mouser Part No 934-MDSM-4R32-38	Littelfuse	Magnetic/Reed Switches SWITCH REED Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel £0.677	Min.: 3,000 Mult.: 3,000 : 3,000
Solid State Relays - PCB Mount SP Open Relay 6-Pin Surface Mount PLA192ESTR IXYS Integrated Circuits 1,000: £1.87 Non-Stocked	Mfr. Part No. PLA192ESTR Mouser Part No 849-PLA192ESTR	IXYS Integrated Circuits	Solid State Relays - PCB Mount SP Open Relay 6-Pin Surface Mount Learn More about IXYS Integrated Circuits littelfuse optomos 1 form a ssrs	Datasheet	Non-Stocked	Reel £1.87	Min.: 1,000 Mult.: 1,000 : 1,000
Magnetic/Reed Switches MDSM-4B 5276 12-23 MDSM-4B-12-23 Littelfuse 1,000: £0.608 Non-Stocked Lead-Time 17 Weeks	Mfr. Part No. MDSM-4B-12-23 Mouser Part No 934-MDSM-4B12-23	Littelfuse	Magnetic/Reed Switches MDSM-4B 5276 12-23 Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 17 Weeks	£0.608 £0.601	Min.: 1,000 Mult.: 100
Magnetic/Reed Switches MDSM-4B 5276 17-23 MDSM-4B-17-23 Littelfuse 1,000: £0.608 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. MDSM-4B-17-23 Mouser Part No 934-MDSM-4B17-23	Littelfuse	Magnetic/Reed Switches MDSM-4B 5276 17-23 Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 13 Weeks	£0.608 £0.601	Min.: 1,000 Mult.: 100
Magnetic/Reed Switches MDSM-4B 5276 22-28 MDSM-4B-22-28 Littelfuse 1,000: £0.608 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. MDSM-4B-22-28 Mouser Part No 934-MDSM-4B22-28	Littelfuse	Magnetic/Reed Switches MDSM-4B 5276 22-28 Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 13 Weeks	£0.608 £0.601	Min.: 1,000 Mult.: 100

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Smart Metering Solutions

Types of Electromechanical