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

HB-2232 Reed Switch with High Breakdown

This HB-2232 Reed Switch with High Breakdown Voltage is designed with highly flexible blades to get maximum contact gap at lower AT ranges. This design offers high break down characteristics. The two types of contacts options available provide breakdown at 350V or 500V minimum. Higher Ampere Turn groups will have even higher breakdown voltage values. Another added advantage is that this HB-2232 Reed Switch can be used in applications with higher shock and vibration as slight blade movement when using lower AT bands will not cause unwanted closures. Of the modified leads available, the cropped version is suitable for smaller plastic housings and can be soldered to cables, the SMD version is suitable for reflow on PCBs, and the vertical and horizontal mount versions are suitable for mounting on through hole PCBs.

  • Drawing of HB-2232 High Breakdown Voltage Reed Switch
  • Drawing HB-2232 with Cropped Leads
  • Drawing of SMD Formed Leads
  • Drawing of Formed Leads for Horizontal mounting
  • Drawing of Formed Leads for Vertical mounting


High Breakdown Voltage. Ruthenium contact. 22.0 mm Glass length. Normally Open. Inert gas filled. 4 types of Lead Formations.



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


Contact FormA
Contact Rating (max)W/VA60.0
Switching Current (max)A0.5
Carry Current (max)A1.75
DC Switching Voltage (max)VDC230
AC Switching Voltage (max)VAC230
Breakdown Voltage (min)VDC500
Contact Resistance (max)100
Insulation Resistance (min)Ω1011
Capacitance (typ)pF0.2


Operate Time (max)ms1.0
Bounce Time (max)ms0.5
Release Time (max)ms0.2
Resonance Frequency (typ)Hz>2000
Operating Frequency (max)Hz500
Operating Temperature°C-40 to +200
Shock Resistance (½Sin wave for 11ms)G50
Vibration Resistance (10-2000Hz)G20
Test Coil Number717 102 002

Ordering Code

HB-2232-(Breakdown Voltage Code)-(Operate Band)-(Formation Code)

Breakdown Voltage CodeLM
Corresponding Breakdown Voltage (min)VDC250500
Operate BandAT30-6030-60
Corresponding Release BandAT8-3512-35
Formation CodeLead Type
Full Length Leads
HHorizontal Mount
VVertical Mount

Examples: HB-2232-L-30-37 denotes 300 V breakdown voltage in 30-37 Operate Band (AT) band with Full Length leads. HB-2232-M-30-35-C denotes 500 V breakdown voltage in 30-35 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 HB-2232 High Breakdown Reed Switch. The complete usage notes are available here.

Ampere Turn Selection for your Application

Ampere Turn Selection Selecting the appropriate Ampere Turn (AT) or magnetic sensitivity for a Reed Switch, Reed Sensor, or Magnet Sensor is crucial in any Continue reading ->

Jun 16, 2024

Handling of Reed Switches

Dropping Reed switch Handling of Reed Switches Reed Switches, Reed Sensors, and Magnet Sensors are delicate devices prone to developing micro cracks in Continue reading ->

Jun 17, 2024

Soldering of Reed Switches

Soldered Reed switch Soldering Reed Switches and Reed Sensors requires meticulous handling to safeguard these delicate components against inadvertent damage. Continue reading ->

Jun 17, 2024

Ferro-magnetic Parts

Ferro-magnetic parts Reed Switches utilize a nickel-iron alloy, sputter coated with additional Ruthenium to render it ferromagnetic while maintaining low Continue reading ->

Jun 17, 2024

Encapsulation and Potting

Dispensing unit Encapsulation Nozzle When potting or encapsulating reed switch assemblies in custom housings, the choice of materials plays a critical Continue reading ->

Jun 17, 2024

Protection Circuits for Reed Switches

Inductive Load Protection Circuit 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 ->

Jun 17, 2024


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 HB-2232 reed switch is known to perform well.

Defibrillators Use Reed switches to Switch High Voltages

Defibrillator Defibrillator Defibrillators are equipments that deliver an electric current to the heart, when cardio-pulmonary resuscitation, or CPR Continue reading ->

Mar 18, 2024

High Voltage Relays are Built with multiple Reed Switches

High voltage relays High Voltage Reed Relays Within the power industry, a diverse array of high voltage reed relays serves crucial roles in signal and Continue reading ->

Jun 13, 2024

Reed sensors for Tamper-proofing Electricity Meters

tamper proof electricity meter Electric companies rely on electricity meters calibrated to measure one kilowatt-hour and determine maximum demand, representing the Continue reading ->

Jun 12, 2024

Rice Cooker Temperature Sensing Using Reed Switches

Reed switches in rice cooker heater control Rice Cooker A Rice Cooker is a kitchen appliance used to boil rice and continue to keep the rice warm and hydrated. As more heat is Continue reading ->

Mar 12, 2024

HB-2232 30W Reed Switches with High Breakdown
22.0mm x ø3.2mm, complete data sheet and technical specifications. This Reed Switch supersedes MRA 203, MRA 200 and MRA 2021 and can be considered a direct equivalent. Customers can safely use HB-2232 in place of HSR-105R.
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: HB-2232
3.8 based on 4 reviews