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

Reed Sensor Manufacturer Cross Reference 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

Product Handling

Dropping Reed switch 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

Manual Soldering

Soldered Reed switch Soldering of Reed Switches and Reed Sensors requires some care to ensure that these delicate devices are not inadvertently damaged. Damage Continue reading ->

Nov 10, 2020

Ferro-magnetic parts

Ferromagnetic 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

Potting and Encapsulation

Dispensing unit Epoxy dispensing Nozzle When potting or encapsulating reed switch assemblies in custom housings, selection of materials are important. Continue reading ->

Sep 4, 2019

Reed Contact Protection Circuits

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 ->

Aug 31, 2020


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.

Reed switches and Reed Sensors in Portable Defibrillators

Defibrillator Defibrillator Defibrillation is a treatment for life-threatening cardiac arrhythmia, or irregular heart beat. This condition is also Continue reading ->

Nov 6, 2020

High Voltage Relays

High voltage relays Reed Relay The power industry uses many types of high voltage relays for signal switching as well as high current switching, in Continue reading ->

Nov 7, 2020

Reed sensors for Tamper-proofing Electricity Meters

tamper proof electricity meter Electric Companies use meters calibrated to measure 1 kilo-watt-hour and also measure maximum demand, which is the peak kilo-watt Continue reading ->

Nov 6, 2020

Thermal Reed Switches in Rice Cookers

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

Nov 30, 2020

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