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

HW-5052 Reed Switch for High Wattages

This HW-5052 High Wattage Reed Switch is physically robust and can switch up to 120W. The two types of contact ratings available cover a wide range of high wattage applications. When supplied in a release AT group and used Normally Closed with a biased magnet, it is especially useful in elevator and hoist applications. Close differential characteristics can also be built into this high wattage reed switch. In addition to the standard Normally Open configuration, we can also supply this reed switch in a normally-closed or a latching form. This reed switch is completely Lead-free and conforms to the RoHS directive. The cropped version is suitable for smaller plastic housings and can be soldered to cables.

  • Drawing of HW-5052 Reed Switch
  • Drawing of HW-5052 Reed Switch for Soldering


Contact Rating Configurable. Ruthenium contact. 50.0 mm Glass length. Normally Open. Inert gas filled. Cropped Version available.



Omni-polar. Does not require power for operation. Sputtered Contact. RoHS Compliant. Not ESD Sensitive.

Cylindrical and Rectangular Magnets

Standard magnets-RRE We offer a range of magnets in different sizes and shapes, specially selected to...Continue reading ->

Actuation Distances for HW-5052-L Reed Switch

HW-5052 reed switch actuation distances For easy selection of AT band and Magnet for an application, we offer Actuation...Continue reading ->


Contact FormA
Contact Rating (max)W/VA120
Switching Current (max)A3.0
Carry Current (max)A5.0
DC Switching Voltage (max)VDC300
AC Switching Voltage (max)VAC240
Breakdown Voltage (min)VDC700
Contact Resistance (max)100
Insulation Resistance (min)Ω1010
Capacitance (typ)pF0.2


Operate Time (max)ms4.0
Bounce Time (max)ms1.0
Release Time (max)ms0.4
Resonance Frequency (typ)Hz>900
Operating Frequency (max)Hz185
Operating Temperature°C-40 to +200
Shock Resistance (½Sin wave for 11ms)G50
Vibration Resistance (10-2000Hz)G20
Test Coil Number717 102 001

Ordering Code

HW-5052-(Contact Rating Code)-(Operate Band)-(Formation Code)

Contact Rating CodeLH
Corresponding Contact Rating (max)VA/W80120
Corresponding Switching Current (max)A2.03.0
Operate BandAT70-12070-120
Corresponding Release BandAT16-4020-55
Formation CodeLead Type
Full Length Leads

Examples: HW-5052-L-70-78 denotes 80W contact rating in 70-78 Operate Band (AT) band with Full Length leads. HW-5052-H-95-100-C denotes 120W Contact rating in 95-100 Operate Band (AT) with cropped leads.

Other Special Configurations: Lower Static Contact Resistance, Dynamic Contact Resistance Limit, Higher Insulation Resistance, Special Release Limits, Gold plated leads.

Usage Notes

Here are some of the recommended usage notes to ensure maximum durability of this high wattage Reed Switch. The complete usage notes are available here.

Ampere Turn Selection

Reed Sensor Manufacturer Cross Reference For any application, it is important to select the correct Ampere Turn (AT) or...Continue reading ->

Product Handling

Dropping Reed switch Reed Switches, Reed Sensor and Magnet Sensors are sensitive devices that easily develop micro...Continue reading ->

Manual Soldering

Soldered Reed switch Manual Soldering of reed switch leads may be required when using custom plastic housing...Continue reading ->

Ferro-magnetic parts

Ferromagnetic parts Using Ferro-magnetic mounting parts or screws within a 100 mm vicinity of a reed switch will...Continue reading ->

Potting and Encapsulation

Dispensing unit As some potting compounds cure over 24 hours, the glass seals should be protected....Continue reading ->

Reed Contact Protection Circuits

Inductive Load Protection Circuit When a reed switch is to be connected to an inductive load or a...Continue reading ->


Although we can never restrict the use of a reed switch to a particular field, the following is a list of some of the applications that the HW-5052 High Wattage reed switch is known to perform well.

High Voltage Relays

High voltage relays The power industry uses many types of relays for signal switching as well as...Continue reading ->

Reed switches in Transformer tap changers

Reed switches in transformer tap changer Tap changers in transformers involve protection and control schemes and one of them is...Continue reading ->

Magnet sensors for Bridge control in Airports

Reed switches in airport bridge control A bridge control operator needs to steer the bridge toward to airplane door for...Continue reading ->

Reed switches in Magnet Extensometers

Reed switches in magnet extensometer Reed Switches are used in magnet extensometer probes to monitor settlement and heave in...Continue reading ->

Magnet sensors in End position sensing in hoists and fork lifts

Reed switches in end position sensing in fork lifts Hoists and fork lifts use hydraulics to move cylinders and pistons to life heavy...Continue reading ->

Reed switches in Floor detection in Elevators and Lifts

Reed switches in floor detection in lifts Latching reed sensors can be mounted on every floor, and a magnet on the...Continue reading ->
HW-5052 120W Reed Switch for High Wattages
50.0mm x ø5.2mm, complete data sheet and technical specifications. This Reed Switch supersedes DRA 2021, DRA 2032, DRA 200, DRA 202 and DRA 282 and can be considered a direct equivalent. Customers can safely use HW-5052 in place of DRR 129, GC-1525, GC-1523, HSR190R, KAM-1 or MKA-50202.
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: HW-5052
4.7 based on 11 reviews