Product Overview
A vacuum relay switch uses an electromagnetic mechanism to operate contacts sealed inside a high-vacuum enclosure. Its small contact gap, low inter-electrode capacitance and inductance, and non-magnetic conductive parts suit RF switching and high-voltage control circuits where impedance and transfer time must be known.
Technical Specifications
|
Parameter |
JPK-41A/401 |
JPK-7/005 |
|
Contact form |
1H (SPST-NO) |
2Z (DPDT) |
|
Medium |
Vacuum |
Vacuum |
|
Test voltage, peak (kV) |
6 |
25 |
|
Rated working voltage, peak (kV) |
DC/50 Hz: 5 |
DC/50 Hz: 20 |
|
Rated carry current, RMS (A) |
DC/50 Hz: 30 |
DC/50 Hz: 150 |
|
Maximum contact resistance (Ohm) |
0.02 |
0.005 |
|
Distributed capacitance (pF) |
Open contacts: 1.2 |
Open contacts: 5 |
|
Insulation resistance (MOhm) |
Open contacts: >=10000 |
Open contacts: >=10000 |
|
Operate / release time (ms) |
<=10 / <=10 |
<=100 / <=15 |
|
Temperature range (deg C) |
-55 to +125 |
-55 to +125 |
|
Shock / vibration rating (G) |
50 / 10 |
30 / 10 |
|
Mechanical life (operations) |
2,000,000 |
1,000,000 |
|
Weight (g) |
25 |
1600 |
|
Nominal coil voltage options (VDC) |
12 / 26.5 / 115 |
24 / 26.5 |
|
Pickup voltage, maximum (VDC) |
8 / 16 / 80 |
16 / 16 |
|
Release voltage (VDC) |
0.5-5 / 1-10 / 5-50 |
1 / 1 |
|
Coil resistance (Ohm +/-10%) |
70 / 290 / 3500 |
60 / 60 |
Coil values in the nominal, pickup, release, and resistance rows correspond in the same left-to-right order.
Core Advantages
DPDT switching for two RF paths
JPK-7/005 uses a two-pole changeover contact and carries up to 150 A at its stated low-frequency rating. One operating mechanism can route two paths in antenna transfer or RF coil-selection circuits.
Compact 25 g SPST-NO model
JPK-41A/401 weighs 25 g and operates and releases within 10 ms. It provides one normally open path for RF or high-voltage assemblies where space, weight, and switching time are limited.
Low contact resistance with stated capacitance
JPK-7/005 has a maximum contact resistance of 0.005 Ohm, and both models include distributed-capacitance data. These values allow closed-path loss and RF circuit loading to be checked before installation.
Customization
Contact and control configuration:
Normally open, normally closed, or changeover contacts; coil voltage; pickup and release requirements; and switching sequence.
Electrical ratings
Working voltage, carry current, make/break current, contact-resistance requirement, and the relay's role in the circuit.
Installation interface
External envelope, terminal form, lead direction, board or panel mounting, and modification from JPK-7-005, JPK-41A-401, an approved drawing, or a reference sample.
Quality Control
Incoming inspection checks contact material, ceramic enclosure condition, coil construction, terminal dimensions, and compatibility with the required contact form. Before sealing, inspectors set the moving and fixed contacts, confirm terminal orientation, and check the mechanical relationship between the coil mechanism and the vacuum contact unit.
Final testing covers contact resistance, coil pickup and release, switching response, contact state, insulation, and withstand performance. Before packing, the model, terminal direction, mounting interface, and test record are matched to the order so the delivered relay fits the confirmed RF or high-voltage assembly.
Why Choose Us
Experience in RF equipment applications
Wanping electro-vacuum products are used in communication, broadcasting, radar, and related electronic systems that require coordinated switching layout and insulation.
Relay built as one matched assembly
The vacuum contact unit, coil mechanism, terminals, and mounting structure are assembled and inspected as a model-specific device, not as interchangeable housings.
Switching checks before shipment
Each relay switch is tested for the specified contact state, coil operation, contact resistance, insulation, and switching response before release.
FAQ
Q: What is the MOQ?
A: Available standard models can be ordered from 1 piece. For a newly developed version, the MOQ is set after the drawing, materials, and production route have been confirmed.
Q: How are samples and production orders packed and shipped?
A: The ceramic body, terminals, leads, and mounting parts are protected separately against impact and deformation. Samples and small orders normally ship by air express. Production orders can be sent by air, sea, or DDP delivery.
Q: Is a vacuum relay switch the same as a vacuum interrupter?
A: No. A vacuum relay switch is a coil-operated component for controlled signal or load switching. A vacuum interrupter is the interruption element installed inside medium- and high-voltage switchgear or circuit breakers.
Q: Can the relay switch a load at its maximum carry-current rating?
A: No. Carry current and make/break current are different ratings. The selected model must match the actual voltage, current, frequency, load type, inrush level, and switching duty.
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