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

Drawing of HW-5052 High Wattage Reed Switch
HW-5052 Cropped reed switch

All dimensions in mm. Click thumbnails to view actuating distances.


Switching wattage configurable from 80W to 120W  Glass sealed on round portion of wire for high seal strength  Flattened leads oriented to contact  Sputtered Ruthenium contact  RoHS Compliant and Lead-free  Not Sensitive to ESD  40-120 Operate AT band


This 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 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.


This reed switch is suitable for use in the following applications and in many others: elevators and hoists, transformer tap changers, high voltage reed relays


Differential Code L H
Operate Range AT 40 – 120 75 – 120
Release Range AT 15 – 40 22 – 55
Contact Rating (max) W/VA 80.0 120.0
Switching Current (max) A 2.0 3.0
Carry Current (max) A 3.0 5.0
DC Switching Voltage (max) VDC 300 300
AC Switching Voltage (max) VAC 240 240
Breakdown Voltage (min) VDC 500 800
Contact Resistance (max) 100 100
Insulation Resistance (min) Ω 1010 1010
Capacitance (min) pF 0.4 0.4


Operate Time (max) ms 4.0
Bounce Time (max) ms 1.0
Release Time (max) ms 0.4
Resonance Frequency Hz >900
Operating Frequency Hz 185
Operating Temperature °C -40 to +200
Shock Resistance (½Sin wave for 11ms) G 50
Vibration Resistance (10-2000Hz) G 20
Test Coil Code 717 102 001

Ordering Code

HW-5052-(Differential Code)-(Start Operate AT)-(Finish Operate AT)-(Lead Formation Code)


The cropped version is suitable for smaller plastic housings and can be soldered to cables. Please click on the thumbnail to view the relevant actuating distances for various Operate AT bands. Information on tolerances for these lead formations can be found here.

Example Ordering Codes

HW-5052-L-95-100 denotes 80W contact rating in 95-100 Operate AT band with unmodified leads
HW-5052-L-95-100-C denotes 80W contact rating in 95-100 Operate AT band with cropped leads

Other Special Configurations Available

Lower Static Contact Resistance
Dynamic Contact Resistance Limit
Higher Insulation Resistance
Special Release Limits
Gold plated leads

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