DB(UL) Normally Closed High Voltage Relays

Cynergy3 / Sensata DB(UL) Normally Closed High Voltage Relays are designed for high-reliability applications. The UL-approved relays feature very high isolation voltages (10kV, 7.5kV, 5kV) and high vacuum reed switches with either rhodium or tungsten contacts. The rhodium contact relays have low contact resistance, and the tungsten contact relays can switch at higher voltages. Cynergy3 / Sensata DB Normally Closed High Voltage Relays applications include cardiac defibrillators, test equipment, and high voltage power supplies.

Results: 31
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Description Datasheet Availability Pricing (RON) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Coil Voltage
Relay Contact Form
Maximum Switched Current
Switching Voltage
Maximum Switched Power
Coil Suppression Diode
Coil Resistance
Termination Style
Series
Cynergy3 Reed Relays HV RELAYS
Datasheet
74In Stock
Min.: 1
Mult.: 1

24 VDC 1 Form B (SPST-NC) 3 A 1 kVAC, 1 kVDC 50 W Diode 925 Ohms Through Hole D
Cynergy3 Reed Relays 5kV 24V SPNC Tungsten - Flying Lead HV contact connections - HR
Datasheet
18In Stock
Min.: 1
Mult.: 1

24 VDC 1 Form B (SPST-NC) 2 A 3.5 kVAC, 3.5 kVDC 50 W Diode 925 Ohms Through Hole D-HR
Cynergy3 Reed Relays HV RELAYS
Datasheet
71In Stock
Min.: 1
Mult.: 1

5 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 38 Ohms Through Hole D
Cynergy3 Reed Relays HV RELAYS
Datasheet
95In Stock
Min.: 1
Mult.: 1

12 VDC 1 Form B (SPST-NC) 2 A 3.5 kVAC, 3.5 kVDC 50 W Diode 150 Ohms Through Hole DA(UL)
Cynergy3 Reed Relays HV RELAYS
Datasheet
191In Stock
120Expected 5/25/2026
Min.: 1
Mult.: 1

24 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 925 Ohms Through Hole D
Cynergy3 Reed Relays 10KV 24V SPNC Tungsten - Flying Lead HV contact connections - HR
Datasheet
25In Stock
20Expected 6/10/2026
Min.: 1
Mult.: 1

24 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 925 Ohms Through Hole D-HR
Cynergy3 Reed Relays HV RELAYS
Datasheet
7In Stock
20Expected 6/12/2026
Min.: 1
Mult.: 1

12 VDC 1 Form B (SPST-NC) 3 A 1 kVAC, 1 kVDC 50 W Diode 240 Ohms Through Hole D
Cynergy3 Reed Relays 10KV 12V SPNC Rhodium - Flying Lead HV contact connections - HR
Datasheet
2In Stock
Min.: 1
Mult.: 1

12 VDC 1 Form B (SPST-NC) 3 A 1 kVAC, 1 kVDC 50 W Diode 240 Ohms Through Hole D-HR
Cynergy3 Reed Relays HV RELAYS
Datasheet
3In Stock
Min.: 1
Mult.: 1

5 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 38 Ohms Through Hole DA(UL)
Cynergy3 Reed Relays HV RELAYS
Datasheet
21In Stock
Min.: 1
Mult.: 1

12 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 240 Ohms Through Hole D
Cynergy3 Reed Relays HV RELAYS
Datasheet
16In Stock
Min.: 1
Mult.: 1

24 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 925 Ohms SMD/SMT D
Cynergy3 Reed Relays HV RELAYS
Datasheet
10In Stock
20Expected 5/25/2026
Min.: 1
Mult.: 1

24 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 925 Ohms Through Hole D
Cynergy3 Reed Relays 10KV 05V SPNC Rhodium - Flying Lead HV contact connections - HR
Datasheet
1In Stock
Min.: 1
Mult.: 1

5 VDC 1 Form B (SPST-NC) 3 A 1 kVAC, 1 kVDC 50 W Diode 38 Ohms Through Hole D-HR
Cynergy3 Reed Relays 10KV 05V SPNC Tungsten - Flying Lead HV contact connections - HR
Datasheet
4In Stock
Min.: 1
Mult.: 1

5 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 38 Ohms Through Hole D-HR
Cynergy3 Reed Relays SPST n/c 10kV Isolation 24V Coil UL
Datasheet
36Expected 5/18/2026
Min.: 1
Mult.: 1

24 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 925 Ohms Through Hole DA(UL)
Cynergy3 Reed Relays RR HV n/c 10kV 5V coil standard UL
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 20
Mult.: 20

5 VDC 1 Form B (SPST-NC) 3 A 1 kVAC, 1 kVDC 50 W Diode 38 Ohms Through Hole DA(UL)
Cynergy3 Reed Relays RR HV n/c 10kV 12V coil standard UL
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 1
Mult.: 1

DA(UL)
Cynergy3 Reed Relays 10KV 24V SPNC Rhodium - Flying Lead HV contact connections - HR
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 20
Mult.: 20

24 VDC 1 Form B (SPST-NC) 3 A 1 kVAC, 1 kVDC 50 W Diode 925 Ohms Through Hole D-HR
Cynergy3 Reed Relays RR HV n/c 10kV 24V coil standard UL
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 20
Mult.: 20

DA(UL)
Cynergy3 Reed Relays 5kV 05V SPNC Tungsten - Flying Lead HV contact connections - HR
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 20
Mult.: 20

5 VDC 1 Form B (SPST-NC) 2 A 3.5 kVAC, 3.5 kVDC 50 W Diode 38 Ohms Through Hole D-HR
Cynergy3 Reed Relays SPST n/c 5kV Isolation 5V Coil UL
Datasheet
Lead-Time 16 Weeks
Min.: 1
Mult.: 1

5 VDC 1 Form B (SPST-NC) 2 A 3.5 kVAC, 3.5 kVDC 50 W Diode 28 Ohms Through Hole DA(UL)
Cynergy3 Reed Relays 7.5kV 05V SPNC Tungsten - Flying Lead HV contact connections - HR
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 20
Mult.: 20

5 VDC 1 Form B (SPST-NC) 2 A 5 kVAC, 5 kVDC 50 W Diode 38 Ohms Through Hole D-HR
Cynergy3 Reed Relays SPST n/c 7.5kV Isolation 5V Coil UL
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 20
Mult.: 20

5 VDC 1 Form B (SPST-NC) 2 A 5 kVAC, 5 kVDC 50 W Diode 28 Ohms Through Hole DA(UL)
Cynergy3 Reed Relays 5kV 12V SPNC Tungsten - Flying Lead HV contact connections - HR
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 20
Mult.: 20

12 VDC 1 Form B (SPST-NC) 2 A 3.5 kVAC, 3.5 kVDC 50 W Diode 240 Ohms Through Hole D-HR
Cynergy3 Reed Relays 10KV 12V SPNC Tungsten - Flying Lead HV contact connections - HR
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 20
Mult.: 20

12 VDC 1 Form B (SPST-NC) 2 A 7 kVAC, 7 kVDC 50 W Diode 240 Ohms Through Hole D-HR