Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

Actuation Distances for MS-108 Reed Sensors

Operate and release distances for the MS-108 reed sensor in the two standard AT bands when actuated with standard magnets are listed below. All distances given are in mm, with tolerances of ±0.5mm. Although some of the AT band / magnet combinations will produce similar actuating distances, selecting the right AT band and magnet for an application is important and can be done by going through our AT band FAQ and our magnet selection guide.

Actuation Distances for MS-108 Gull-wing SMD

RRE MS-105 magnet actuation
Magnet Actuation Direction

Operate Band 10-15 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.52.0 – 3.53.5 – 4.0
NDR-S6.0 x 2.5 x 2.57.0 – 10.09.0 – 11.0
NDR-M8.0 x 3.0 x 3.011.0 – 14.014.0 – 15.0
NDR-I12.0 x 3.5 x 3.515.0 – 19.018.0 – 20.0
NDR-L19.0 x 4.0 x 4.021.0 – 27.024.0 – 29.0
NDC-TØ2.0 x 4.02.5 – 4.04.0 – 4.5
NDC-SØ3.0 x 7.09.0 – 12.011.0 – 13.0
NDC-MØ4.0 x 10.014.0 – 18.017.0 – 19.0
NDC-IØ6.0 x 12.024.0 – 28.027.0 – 30.0
NDC-LØ8.0 x 15.031.0 – 39.037.0 – 42.0

Operate Band 15-20 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.51.0 – 2.02.0 – 3.5
NDR-S6.0 x 2.5 x 2.55.0 – 7.06.0 – 9.0
NDR-M8.0 x 3.0 x 3.09.5 – 11.011.0 – 14.0
NDR-I12.0 x 3.5 x 3.512.5 – 15.015.0 – 18.0
NDR-L19.0 x 4.0 x 4.019.0 – 21.022.0 – 24.0
NDC-TØ2.0 x 4.02.0 – 2.53.0 – 4.0
NDC-SØ3.0 x 7.07.5 – 9.09.0 – 11.0
NDC-MØ4.0 x 10.011.5 – 14.013.0 – 17.0
NDC-IØ6.0 x 12.020.0 – 24.023.0 – 27.0
NDC-LØ8.0 x 15.027.0 – 31.030.0 – 37.0

Operate Band 20-25 (AT)

MagnetDimensionsOperate DistanceRelease Distance
NDR-T4.0 x 1.5 x 1.50.5 – 1.02.0 – 3.0
NDR-S6.0 x 2.5 x 2.54.0 – 5.06.0 – 7.0
NDR-M8.0 x 3.0 x 3.08.0 – 9.510.0 – 11.0
NDR-I12.0 x 3.5 x 3.517.0 – 19.022.0 – 23.0
NDR-L19.0 x 4.0 x 4.011.0 – 12.515.0 – 16.0
NDC-TØ2.0 x 4.01.0 – 2.03.0 – 4.0
NDC-SØ3.0 x 7.06.0 – 7.59.0 – 9.5
NDC-MØ4.0 x 10.010.0 – 11.513.0 – 14.0
NDC-IØ6.0 x 12.018.0 – 20.023.0 – 24.0
NDC-LØ8.0 x 15.025.0 – 27.030.0 – 32.0

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