littelfuse.com© 2016 Littelfuse Revised: 04/26/16
Specifications are subject to change without notice.
MRPR-20 20.3mm Miniature High Voltage and High Power Reed Switch
Description
The MRPR-20 Reed Switch is a miniature, normally open switch with a 20.32mm
long x 2.84mm diameter (0.800” x 0.112”) glass envelope, capable of high
voltage and power switching of 265Vac at 50VA. The MRPR-20 has high
insulation resistance of 10
10
ohms minimum and contact resistance less than
100 milli-ohms.
Agency Approvals
Agency Agency File Number
Ampere-Turns
Range
E47258
17-43 AT
Switch Type
Contact Form A (SPST-NO)
Materials
Body: Glass
Leads: Tin-plated Ni-Fe wire
Axial Lead Reed Switches
Features
• Miniature normally open switch
• Capable of switching 265Vac or
1.5A at up to 50W/VA
• Minimum breakdown voltage
750Vdc
• Available sensitivity range
17-43 AT
Benefits
• Hermetically sealed switch
contacts are not affected by and
have no effect on their external
environment
• Zero operating power required
for contact
• High voltage and power switching
with a miniature switch
Applications
• Reed relays (suitable for switching
global mains voltage)
• Limit switching
• Telecom line switching
• Heavy Load Switching
Dimensions
Dimensions in mm (inch)
High Power > MRPR-20
RoHS
Note: SPST-NO = Single-pole, single-throw, normally open
Electrical Ratings
Contact Rating
1
W/VA - max. 50
Voltage
3
Switching
2
Breakdown
4
Vdc - max.
Vac - max.
Vdc - min.
250
265
750
Current
3
Switching
2
Carry
Adc - max.
Aac - max.
Adc - max.
1.5
1.1
3.0
Resistance
Contact, Initial
Insulation
Ω - max.
Ω - min.
0.100
10
10
Capacitance Contact pF - typ. 0.2
Temperature
Operating
Storage
5
°C
°C
-20 to +125
-65 to +125
Notes:
1. Contact rating - Product of the switching voltage and current should never exceed the wattage rating. Contact Littelfuse for additional load/life information.
2. When switching inductive and/or capacitive loads, the effects of transient voltages and/or currents should be considered. Refer to Application Notes AN108A and AN107 for details.
3. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load.
4. Breakdown Voltage - per MIL-STD-202, Method 301.
5. Storage Temperature - Long time exposure at elevated temperature may degrade solderability of the leads.
CL OF OVERLAP
28.32
(1.115) REF.
18.16
(.715) MAX.
20.32
(.800) MAX.
56.64
2.84
(.112) MAX.
(.025) DIA. REF.
Note: Contact Littelfuse for specific agency approval ratings.
