Because this relay contactor uses a chamber filled with high-purity nitrogen around the contacts, oxygen and moisture stay away from the contact faces and contact condition remains stable over a long service run. A neodymium-iron-boron permanent magnet sits beside the gap and drives the arc sideways, stretching and cooling it until it extinguishes. That arrangement supports high DC switching power without the bulky blowout hardware older designs needed. With the contacts working in nitrogen rather than open air, dust and humidity in the surrounding cabinet have far less influence on them.
YV30 is the entry rating in the YV high voltage DC contactor family, which runs through 50 A, 100 A, 150 A, 200 A, 250 A, 300 A and 400 A. Pick the size that covers your steady resistive current with headroom, then check the inrush or pre-charge peak against the switching figures before you commit. When a design sits between two ratings, moving up one step costs little board space and keeps margin on the contacts. Coil leads can be supplied to a length other than the standard 300 mm, so tell us the coil voltage and wiring run your drive board uses and we will confirm the right variant.
YongNeng is a relay manufacturer supplying signal relays, latching relays and high-power relays, together with a high-voltage DC contactor line that runs from 16A up to 400A. Because our range covers everything from light switching duty to heavy DC loads, buyers can consolidate several switching positions with one supplier instead of sourcing each rating separately. Power relays are offered in sealed and open construction, and contact wiring is arranged for straightforward installation. Tell us the current rating, switching duty and mounting space your project needs, and we will help you match the right relay or contactor to your build.
| CONTACT DATA | |
| Model |
YV30 |
| Contact Arrangement |
1A |
| Contact Resistance |
<=2.0 mΩ |
| Contact Material | Silver Alloy |
| Contact Rating ( Res.Load ) | 30A |
| Max. Switching Current | 300A/320VDC |
| Max. Switching Voltage | 12-1000VDC |
| Max. Switching Power | 96KW |
| Mechanical endurance | 1x105次 OPS |
| Electrical endurance | 2x104次 OPS(30A 450VDC), 6x103次OPS(30A 750VDC), 1x103次OPS(20A 1000VDC) |
| CHARACTERISTICS | |
|
Set Time ( at nomi.volt.) |
5ms Max. |
| Release Time ( without diode ) | 10ms Max. |
| Insulation Resistance | Between Open Contacts:1,000MΩ(1000VDC) Between Coil& Contacts:1,000MΩ(1000VDC) |
| Dielectric Strength | Between Open Contacts : 2,500VAC, 50/60Hz 1 min. |
| Between Coil & Contacts: 2,500VAC, 50/60Hz 1 min | |
| Coil End Lead Out Form | Leading 300mm / customized. |
| Ambient Temperature | -40℃~+85℃ ( No condensation) |
| Unit Weight | Approx. 100g |
| Impact Stability | 196 m/s2 |
| Impact Strength | 490 m/s2 |
Treat it as a high voltage DC relay doing contactor work: a magnetically driven switch built to connect and interrupt a DC power path rather than a signal circuit. The name matters less than the duty, so compare the contact rating, switching voltage and life figures against your circuit before you commit.
The continuous contact rating is the steady resistive-load figure, and it is the number to compare with your normal operating current. The peak figure describes what the contacts can carry briefly during inrush and pre-charge events. For most builds the steady-state number decides whether this power relay fits, so if your continuous current sits close to the rating, confirm the duty with our team.
Our release-time figure assumes no diode across the coil, which is the fastest the contacts can open. If your drive circuit adds a diode for noise suppression, release slows slightly and the timing shifts. Tell us your coil drive arrangement and we will confirm how it affects your switching sequence.
Match three things first: contact rating, coil voltage and mounting footprint, then check the coil lead-out against your existing wiring. Send us the markings on the old unit and we will confirm whether this model is the closest match or whether another rating in the series suits the circuit better. As a relay supplier we can cross a part that has been in service for years without forcing a redesign.
1A is one contact set of form A, which is a single pole. In practice that means one load circuit per device, so a circuit needing two independently switched poles uses two units or another variant in the series. As a relay manufacturer, we can confirm the arrangement for your build.
It connects and interrupts the DC path under normal switching duty, including the inrush events a DC bus creates. Isolation for maintenance should come from the system's disconnect and lockout arrangement rather than from the contactor alone. As with any high voltage DC contactor, treat it as a switching device and keep isolation in the system design.
