MS-328 Flat Pack Reed Sensors with Actuator

Features

10W Contact Rating. Normally 30W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Contact. Higher Shock Limits. Easy Screw Mounting.

Benefits

Omni-polar. Does not require power for operation. RoHS Compliant. Not ESD Sensitive. Various Cables and Connectors Available. Actuator with same Housing available.

Description

This MS-328 screw mountable sensor can be mounted with M3 screws and can switch loads of up to 30W. It is particularly useful in industrial applications where distance adjustments need to be made every now and then. Various activating distances are available depending on the magnet and the AT band used. This sensor can be supplied with non-standard connectors on request. All sensors are tested 100% for Operate AT, Release AT, Static Contact Resistance and Variable Contact Resistance before packing. Being an omni-polar device, this sensor can be actuated with either a north pole or a south pole or both. Choosing the right AT band, magnet strength, and operating axis, will restrict the number of operates and releases to one.

Cylindrical and Rectangular Magnets

Drawing of Cylindrical MagnetsDrawing of Rectangular Bar Magnets starFeaturesNdFeB High Energy. Nickel coated. Energized Continue reading ->

Nov 18, 2020

Actuation Distances for MS-328 Flat Pack Sensor

Operate and release distances for the MS-328 standard size Flat pack sensor in the three standard AT bands when actuated (as shown in the Continue reading ->

Oct 30, 2020

Electrical

Contact Form		A
Contact Rating (max)	W/VA	30.0
Switching Current (max)	A	0.5
Carry Current (max)	A	2.50
DC Switching Voltage (max)	V_DC	230
Breakdown Voltage (min)	V_DC	350
Contact Resistance (max)	mΩ	150
Insulation Resistance (min)	Ω	10⁹
Capacitance (typ)	pF	0.2

Miscellaneous

Operate Time (max)	ms	0.35
Bounce Time (max)	ms	0.30
Release Time (max)	ms	0.15
Resonance Frequency (typ)	Hz	>2000
Operating Frequency (max)	Hz	500
Operating Temperature Range	°C	-40 to +70
Shock Resistance (½Sin wave for 11ms)	G	50
Vibration Resistance (10-2000 Hz)	G	20

Ordering Code

MS-328-(Operate Band Code)-(Cable Length in mm)-(Cable Termination Code)

Operate Band Code
3	AT	20-25
4	AT	25-30
5	AT	30-35

Cable Termination Code	Termination Type
S	Stripped to 5.0 mm
T	Stripped and Tinned

Example: MS-328-4-500-T Denotes MS-328 Flat-pack Sensor in 25-30 Operate AT, with 500 mm cable length and Tinned ends.

Other Special Configurations: Lower Static Contact Resistance, Dynamic Contact Resistance Limit, Special Release Limits.

Usage Notes

Here are some of the recommended usage notes to ensure maximum durability of this product. The complete usage notes are available here.

Ampere Turn Selection

For any application, it is important to select the correct Ampere Turn (AT) or magnetic sensitivity of a Reed Switch, Reed Sensor or Continue reading ->

Aug 27, 2020

Effects of Temperature

The normal operating temperature range for a reed contact is -40°C to +200°C, but too steep a rise or drop in temperature may Continue reading ->

Aug 27, 2020

Product Handling

Reed Switch Handling Reed Switches, Reed Sensor and Magnet Sensors are sensitive devices that easily develop micro cracks in the glass Continue reading ->

Aug 31, 2020

Ferro-magnetic parts

Reed Switches use an alloy of Nickel and Iron with a few other elements that make the alloy Ferro-magnetic and having a low Remanence. Continue reading ->

Sep 4, 2019

Cable Handling

Magnet Sensor Cable Handling When using Reed Switches soldered to cables, or when using off the shelf Magnet Sensors with cables, some Continue reading ->

Sep 4, 2019

Reed Contact Protection Circuits

It is assumed that the ideal reed switch load is a Resistive Load, but it is almost impossible to reduce any load to purely resistive. Continue reading ->

Aug 31, 2020

Applications

Although we can never restrict the use of a reed sensor to a particular field, the following is a list of some of the applications that the MS-328 Magnet Sensor is known to perform well.