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Form C - Changeover |

Changeover reed sensor products contain one or more single-pole double throw SPDT reed switches where a normally closed contact opens before a normally open contact closes. A changeover reed sensor is also referred to as a (Form C) reed sensor or break-before-make (Form C) which defines the sequence in which one reed switch contact opens its connection to another contact and then closes its connection to a third contact. Changeover reed sensors can also be used as a (Form B), normally closed reed sensor (N.C.) application. Check out our Magnet Interaction page to see animated examples of how reed switches are used in a sensing environment.

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MK21PR series reed senso

MK21PR Series Reed Sensor is an economical right-side cable exit sensor that is screw mounted to the application. The right-side cable exit design suits applications where space does not allow for our standard left-side cable exit MK21 sensor. The flat PVC wires exit the right side of the rectangular housing and come in various standard and custom cable lengths as well as termination options. The MK21PR sensor series is used in position, proximity, motion, level, and end limit sensing. Other options include various internal switch configurations. 

MK04R series reed senso

MK04R Series Reed Sensor is an economical right-side cable exit sensor that is screw mounted to the application. The right-side cable exit design suits applications where space does not allow for our standard left-side cable exit MK04 sensor. The flat PVC wires exit the right side of the rectangular housing and come in various standard and custom cable lengths as well as termination options. The MK04R sensor series is used in position, proximity, motion, level, and end limit sensing. Other options include various internal switch configurations. 

MK23 Reed Sensor

Best value ultraminiature bare glass surface mount (SMD) MK23 Series Reed Sensor series used in On/Off control switch, proximity, motion, position detection with high voltage and Form C (SPDT Changeover) options. Supplied in tape and reel according to IEC 286/part 3. Axial, gull-wing, inverse gull-wing, J-lead or helix lead designs available. UL Approval

UL Certificate of Compliance

MK01 Reed Sensor

SPDT Changeover surface mount (SMD) MK01 Series Reed Sensor used in On/Off control switch, proximity, motion, position detection with high power switch option. Supplied in tape and reel according to IEC 286/part 3. UL Approval

UL Certificate of Compliance

MK14 Reed Sensor

Panel mount (4.0mm) MK14 Series Reed Sensor are supplied in a cylindrically shaped housing with cable terminals. Optional internal switch, cable, length, and termination. UL Approval

UL Certificate of Compliance (MKxxU *Series followed by U)

MK03 Reed Sensor

Panel mount (5.75mm) MK03 Series Reed Sensor are supplied in a cylindrically shaped housing with cable terminals. Optional internal switch, cable, length, and termination. UL Approval

UL Certificate of Compliance (MKxxU *Series followed by U)

MK11 Stainless Steel Reed Sensor

M5/M8 adjustable thread mount MK11 Stainless Steel Series Reed Sensor are supplied in a cylindrically shaped housing with cable terminals. Used in position, level, and end limit detection w/convenient sensing adjustment. Optional internal switch, cable, length, and termination. UL Approval, IP67 Rated

UL Certificate of Compliance (MKxxU *Series followed by U)

MK11 Plastic Reed Sensor

M8 adjustable thread mount MK11 Plastic Series Reed Sensor are supplied in a cylindrically shaped housing with cable terminals with optional high voltage switch. Used in position, level, and end limit detection w/convenient sensing adjustment. Optional internal switch, cable, length, and termination. UL Approval, IP67 Rated

UL Certificate of Compliance (MKxx/MxU *Series followed by U)

MK11Brass Reed Sensor

M6, M8, M10 and M12 adjustable thread mount MK11 Brass Series Reed Sensor are supplied in a cylindrically shaped housing with cable terminals with optional high voltage switch. Used in position, level, and end limit detection w/convenient sensing adjustment. Optional internal switch, cable, length, and termination. UL Approval, IP67 Rated

UL Certificate of Compliance (MKxx/BxU *Series followed by U)

MK07 Reed Sensor

Plastic M8 adjustable thread mount MK07 Series Reed Sensor are supplied in a cylindrically shaped housing with cable terminals. Used in position, level, and end limit detection w/convenient sensing adjustment. Optional internal switch, cable, length, and termination. UL Approval

UL Certificate of Compliance (MKxxU *Series followed by U)

MK02 Reed Sensor

Ferrous metal detection screw fastened flange mount MK02 Series Reed Sensor in a rectangular housing with cable terminals. Front or above operation. UL Approval, IP67 Rated

UL Certificate of Compliance (MKxx/xU *Series followed by U)

MK28 Reed Sensor

Magnetically conductive vane operated screw fastened MK28 Series Reed Sensor with cable terminals is ideal in harsh environments.

MK04 Reed Sensor Dimensions

Best value screw fastened flange mount MK04 Series Reed Sensor in a rectangular housing with cable terminals. Used in position, proximity, motion, level, and end limit sensing. Optional internal switch, cable, length, and termination. UL Approval

UL Certificate of Compliance (MKxxU *Series followed by U)

MK05 Reed Sensor

Best value screw fastened flange mount MK05 Series Reed Sensor in a rectangular housing with cable terminals. Used in position, proximity, motion, level, and end limit sensing. Optional internal switch, cable, length, and termination. UL Approval

UL Certificate of Compliance (MKxxU *Series followed by U)

MK13 Reed Sensor

Best value screw fastened flange mount MK13 Series Reed Sensor in a rectangular housing with cable terminals. Used in position, proximity, motion, level, and end limit sensing. Optional internal switch, cable, length, and termination. UL Approval

UL Certificate of Compliance (MKxxU *Series followed by U)

MK26 Reed Sensor

High voltage screw fastened flange mount MK26 Series Reed Sensor in a rectangular housing with cable terminals. Used in position, proximity, motion, level, and end limit sensing. Optional internal switch, cable, length, and termination. IP67 Rated

MK21P, MK21M Reed Sensor

High temperature resistant screw fastened flange mount MK21P, MK21M Series Reed Sensor in a rectangular housing with cable terminals. Used in position, level, and end limit sensing. Molded (M) version for high temperature resistance up to +150°C. Optional internal switch, cable, length, and termination. UL Approval, IP67 Rated

UL Certificate of Compliance (MKxxU *Series followed by U)

MK27 Reed Sensor

High voltage aluminum screw fastened flange mount MK27 Series Reed Sensor in a rectangular housing with cable terminals. Ideal in harsh environments for proximity, position, motion, and end limit detection. Sensing distance up to 40mm, magnet included. Optional internal switch, cable, length, and termination. IP67 Rated

MK06 Reed Sensor

Miniature through-hole mount (THT) MK06 Series Reed Sensor used in On/Off control switch, proximity, motion, position detection. 1 inch (2.54mm) pin spacing available. UL Approval

UL Certificate of Compliance (MKxxU *Series followed by U)

MK25 Reed Sensor

ATEX & IECEx approved (intrinsically safe) contactless push button panel mount MK25 Series Reed Sensor. Optional internal switch, cable, length, and termination. Button plates, emergency stop buttons, etc. can be provided with laser inscriptions as required. The information is burnt into the surface and thus, unlike with print-inscribed elements, is very durable. KEMA 05ATEX1206X, KEM 09.0005X Certified to operate in hazardous locations or potentially explosive environments.


Type of protection: II 2 G Ex mb IIC T6
II 2 D Ex tD A21 IP65 T85 °C
In accordance with: IEC/EN 60079-0, IEC/EN 60079-18, IEC/EN 61241-0, IEC/EN 61241-1

ATEX Examination Certificate

ATEX Declaration of Conformity

IECEx Certificate of Conformity

Mounting Instructions for MK25


 

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