A residual current device (RCD) is the most life-saving component in your electrical panel — it disconnects power within milliseconds when an electrical leakage is detected. Nisko, Israel's leading electrical components manufacturer, offers professional RCBO and RCCB series (KNS and KNO) certified to Israeli and European standards. At ramo.co.il you'll find Nisko RCDs starting from ₪109 including VAT with immediate stock.
Quick Summary
✅ Combined RCD and circuit breaker in one RCBO unit
✅ 6KA and 10KA ratings for all panel types
✅ Single-phase and three-phase options
✅ Certified to EN61009 and Israeli Standards Institute
✅ Prices from ₪109 to ₪727 including VAT
What Is a Residual Current Device and Why Is It Mandatory? ⚡
An RCD detects the difference in current between the live and neutral conductors. When a leakage occurs — for example when a person touches a live wire — the device disconnects the circuit within 30 milliseconds, well before a lethal shock can occur. Israeli Standard 1203 mandates RCD installation in all circuits in new residential buildings.
An RCBO (Residual Current Circuit Breaker with Overcurrent Protection) combines both RCD and MCB functions in a single device — saving panel space and providing dual protection. Nisko manufactures three main lines: KNS 6KA for standard residential use, KNO 10KA for residential and commercial panels, and RCCB/KRB for three-phase and EV charging applications.
All Nisko products comply with EN61009 and are approved by the Israeli Standards Institute. Models are available in 16A, 20A, and 32A ratings to cover all household circuits — lighting, sockets, air conditioning, and ovens.
💡 Pro Tip
Press the TEST button on your RCD once a month — it should trip immediately. If it doesn't, it's time for a replacement. This 10-second check can save lives.
Nisko Series Guide — KNS, KNO, and RCCB 🔌
The KNS 6KA series is a single-phase RCBO with a 6kA short-circuit rating — ideal for standard residential panels. Available in 16A and 32A versions covering most domestic circuits: lighting, sockets, air conditioners, and ovens. The most popular choice for apartment renovations in Israel.
The KNO 10KA series is the premium line with higher fault-current capacity, suitable for new apartments and commercial installations. The 3-phase version serves industrial motors, commercial HVAC, and main distribution boards. Nisko offers 4–5 variants per series to match every specification.
The RCCB KRB/NSK is a pure residual current device (no MCB function) installed upstream of existing breakers. The Type B variant is required for EV charging stations and variable frequency drive equipment, complying with IS T 5159 for EV parking installations.
Nisko RCD Price Guide 🛒
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Frequently Asked Questions ❓
What is the difference between an RCBO and an RCCB?
An RCBO combines residual current protection and overcurrent protection in one device. An RCCB provides only residual current protection and is used together with existing MCBs.
What is the difference between 6KA and 10KA?
KA indicates the short-circuit breaking capacity. 6KA suits standard residential networks. 10KA offers higher fault tolerance — recommended for new buildings and commercial installations.
What are Type A and Type B?
Type A protects against AC and pulsating DC residual currents — suitable for most home applications. Type B also protects against smooth DC currents — required for EV charging stations and variable frequency drives.
How many RCDs are needed in a home panel?
In a typical 3–4 room apartment, one RCD per circuit group is recommended: lighting circuits, socket circuits, and the air conditioning circuit. A licensed electrician will advise based on your specific panel.
Are Nisko RCDs certified to Israeli standards?
Yes. Nisko products comply with EN61009 and are approved by the Israeli Standards Institute — suitable for all new construction and renovations.
Conclusion
Nisko's RCD range — KNS, KNO, and RCCB — delivers professional electrical protection for every home and business from ₪109 including VAT. Order now with immediate stock ✅