Magnetic/Reed Switches – Mouser United Kingdom

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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.	Switch Type	Contact Form	Operate Range	Voltage Rating AC	Color	Mounting Style	Termination Style	Packaging
Magnetic/Reed Switches NO 10-15AT 7.5mm Overmolded Sensor 59166-1-S-00-C Littelfuse 1: £1.25 2,125In Stock 1,000Expected 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	2,125In Stock 1,000Expected 23/12/2026	£1.25 £1.09 £0.995 £0.908 View £0.796 £0.746 £0.706 £0.678	Min.: 1 Mult.: 1	Miniature	SPST	10 AT to 15 AT	140 VAC	Black	PCB Mount	Gull Wing Lead	Bulk
Magnetic/Reed Switches NO 20-25AT 5mm Overmolded Sensor 59166-1-U-00-D Littelfuse 1: £1.04 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 £1.04 £0.899 £0.834 £0.742 View Reel £0.568 £0.691 £0.656 £0.615 £0.568	Min.: 1 Mult.: 1 : 1,500	Miniature	SPST	20 AT to 25 AT	140 VAC	Black	PCB Mount	Gull Wing Lead	Reel, Cut Tape
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 £0.678 £0.642 £0.608 £0.562 £0.546	Min.: 1 Mult.: 1	Sub-Miniature	SPST	20 AT to 25 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
Magnetic/Reed Switches NO 7-13AT SMT MDSM-4R-7-13 Littelfuse 1: £0.882 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 £0.882 £0.788 £0.78 Reel £0.78	Min.: 1 Mult.: 1 : 3,000	Sub-Miniature	SPST	7 AT to 13 AT	140 VAC	Clear	PCB Mount	Gull Wing Lead	Reel, Cut Tape
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	Sub-Miniature	SPST	17 AT to 23 AT	140 VAC	Clear	PCB Mount	Axial	Reel, Cut Tape, MouseReel
Magnetic/Reed Switches SPST 140VAC, 15 AT-20 AT Range MDSR-10-15-20 Littelfuse 1: £1.05 1,678In 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	1,678In Stock	£1.05 £0.882 £0.826 £0.732 View £0.679 £0.662 £0.623	Min.: 1 Mult.: 1	Sub-Miniature	SPST	15 AT to 20 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
Magnetic/Reed Switches SWITCH REED MDSM-4R-12-18 Littelfuse 1: £1.05 23,424In 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	23,424In Stock	Cut Tape £1.05 £0.899 £0.834 £0.766 View Reel £0.624 £0.704 £0.668 £0.624 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Sub-Miniature	SPST	12 AT to 18 AT	140 VAC	Clear	PCB Mount	SMD/SMT	Reel, Cut Tape, MouseReel
Magnetic/Reed Switches MDSR-10 10-15 MDSR-10-10-15 Littelfuse 1: £1.05 2,554In 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	2,554In Stock	£1.05 £0.882 £0.826 £0.732 View £0.679 £0.678 £0.674 £0.623	Min.: 1 Mult.: 1	Sub-Miniature	SPST	10 AT to 15 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
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	Miniature	SPST	15 AT to 20 AT	140 VAC	Black	PCB Mount	Gull Wing Lead	Reel, Cut Tape
Magnetic/Reed Switches NO 15-20AT 6.5mm Overmolded Sensor 59166-1-T-00-D Littelfuse 1: £1.01 1,363In 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	1,363In 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	Miniature	SPST	15 AT to 20 AT	140 VAC	Black	PCB Mount	Gull Wing Lead	Reel, Cut Tape
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	Sub-Miniature	SPST	30 AT to 35 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
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	Sub-Miniature	SPST	12 AT to 18 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
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	Sub-Miniature	SPST	32 AT to 38 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
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 08/12/2026 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	Miniature	SPST	10 AT to 15 AT	140 VAC	Black	PCB Mount	Gull Wing Lead	Reel, Cut Tape
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	Sub-Miniature	SPST	32 AT to 38 AT	140 VAC	Clear	PCB Mount	Axial	Reel
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	Sub-Miniature	SPST	12 AT to 23 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
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	Sub-Miniature	SPST	17 AT to 23 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
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	Sub-Miniature	SPST	22 AT to 28 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
Magnetic/Reed Switches MDSM-4B 5276 27-33 MDSM-4B-27-33 Littelfuse 1,000: £0.608 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. MDSM-4B-27-33 Mouser Part No 934-MDSM-4B27-33	Littelfuse	Magnetic/Reed Switches MDSM-4B 5276 27-33 Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 13 Weeks	£0.608 £0.601	Min.: 1,000 Mult.: 100	Sub-Miniature	SPST	27 AT to 33 AT	140 VAC	Clear	PCB Mount	Axial	Bulk
Magnetic/Reed Switches MDSM-4R 5277 12-23 MDSM-4R-12-23 Littelfuse 3,000: £0.624 Non-Stocked Lead-Time 17 Weeks	Mfr. Part No. MDSM-4R-12-23 Mouser Part No 934-MDSM-4R12-23	Littelfuse	Magnetic/Reed Switches MDSM-4R 5277 12-23 Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 17 Weeks	Reel £0.624	Min.: 3,000 Mult.: 3,000 : 3,000	Sub-Miniature	SPST	12 AT to 23 AT	140 VAC	Clear	PCB Mount	Axial	Reel
Magnetic/Reed Switches MDSM-4R 5277 17-28 MDSM-4R-17-28 Littelfuse 3,000: £0.624 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. MDSM-4R-17-28 Mouser Part No 934-MDSM-4R17-28	Littelfuse	Magnetic/Reed Switches MDSM-4R 5277 17-28 Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 13 Weeks	Reel £0.624	Min.: 3,000 Mult.: 3,000 : 3,000	Sub-Miniature	SPST	17 AT to 28 AT	140 VAC	Clear	PCB Mount	Axial	Reel
Magnetic/Reed Switches MDSM-4R 5277 22-28 MDSM-4R-22-28 Littelfuse 3,000: £0.671 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. MDSM-4R-22-28 Mouser Part No 934-MDSM-4R22-28	Littelfuse	Magnetic/Reed Switches MDSM-4R 5277 22-28 Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 13 Weeks	Reel £0.671	Min.: 3,000 Mult.: 3,000 : 3,000	Sub-Miniature	SPST	22 AT to 28 AT	140 VAC	Clear	PCB Mount	Axial	Reel
Magnetic/Reed Switches MDSM-4R 22-33 MDSM-4R-22-33 Littelfuse 3,000: £0.624 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. MDSM-4R-22-33 Mouser Part No 934-MDSM-4R22-33	Littelfuse	Magnetic/Reed Switches MDSM-4R 22-33 Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 13 Weeks	Reel £0.624	Min.: 3,000 Mult.: 3,000 : 3,000	Sub-Miniature	SPST	22 AT to 33 AT	140 VAC	Clear	PCB Mount	Axial	Reel
Magnetic/Reed Switches MDSM-4R 5277 27-33 MDSM-4R-27-33 Littelfuse 3,000: £0.624 Non-Stocked Lead-Time 13 Weeks	Mfr. Part No. MDSM-4R-27-33 Mouser Part No 934-MDSM-4R27-33	Littelfuse	Magnetic/Reed Switches MDSM-4R 5277 27-33 Learn More about Littelfuse reed switches	Datasheet	Non-Stocked Lead-Time 13 Weeks	Reel £0.624	Min.: 3,000 Mult.: 3,000 : 3,000	Sub-Miniature	SPST	27 AT to 33 AT	140 VAC	Clear	PCB Mount	Axial	Reel
Magnetic/Reed Switches NO 25-30AT MDSR-10-25-30 Littelfuse 1: £1.11 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. MDSR-10-25-30 Mouser Part No 934-MDSR-10-25-30	Littelfuse	Magnetic/Reed Switches NO 25-30AT Learn More about Littelfuse mdsr 10 reed switches	Datasheet	Non-Stocked Lead-Time 16 Weeks	£1.11 £0.943 £0.882 £0.78 View £0.72 £0.681 £0.645 £0.601	Min.: 1 Mult.: 1	Sub-Miniature	SPST	25 AT to 30 AT	140 VAC	Clear	PCB Mount	Axial	Bulk

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