RC Snubber for switching the inductive load 5V to 400V AC or DC loads
The AC/DC 5V–400V RC Snubber Circuit Module is a compact protection module designed to suppress voltage spikes, reduce electromagnetic interference (EMI), and protect switching devices used with inductive loads. It combines a high-quality RC absorption network and an integrated MOV varistor to absorb inductive kickback and limit transient overvoltages. Suitable for both AC and DC systems, the module supports voltages from 5V to 400V and inductive loads up to 1000W. Commonly used with relays, contactors, motors, solenoids, transformers, thyristors, and triacs, it improves system reliability, extends component lifespan, and enhances overall circuit stability.
وحدة RC Snubber AC/DC بجهد 5V إلى 400V هي دائرة حماية مدمجة مصممة لتقليل ارتفاعات الجهد المفاجئة والتشويش الكهرومغناطيسي (EMI) وحماية عناصر التبديل المستخدمة مع الأحمال الحثية. تجمع الوحدة بين دائرة امتصاص RC عالية الجودة وفارستور MOV مدمج لامتصاص الجهد العكسي الناتج عن الأحمال الحثية والحد من الارتفاعات العابرة للجهد. تدعم نطاق تشغيل واسع من 5V إلى 400V AC/DC وأحمالاً تصل إلى 1000 واط. تُستخدم مع المرحلات والمحركات والمحولات والترياكات والثايرستورات لتحسين الاعتمادية وإطالة عمر المكونات وزيادة استقرار النظام.
The AC/DC 5V–400V RC Snubber Circuit Module is an essential protection device for power electronics and switching applications involving inductive loads. The module integrates a resistor-capacitor (RC) absorption network together with a Metal Oxide Varistor (MOV) to suppress high-voltage transients generated when inductive devices such as motors, relays, solenoids, transformers, and contactors are switched off.
By absorbing inductive kickback and reducing high-frequency noise, the module prevents contact arcing, minimizes relay wear, and protects semiconductor switching devices including thyristors, triacs, and solid-state relays. The built-in MOV provides additional surge suppression by clamping excessive voltage spikes before they can damage sensitive components.
Its non-polar design allows operation in both AC and DC circuits, making installation simple and versatile. The module significantly improves electromagnetic compatibility (EMC), reduces interference with nearby electronic circuits, and increases the reliability and service life of industrial, commercial, and automation systems.
Specifications
| Parameter | Specification |
|---|---|
| Product Type | RC Snubber / Absorption Circuit Module |
| Operating Voltage | 5V – 400V AC/DC |
| Maximum Load Power | Up to 1000W Inductive Load |
| Snubber Resistor | 220Ω ±10% (Typical) |
| Snubber Capacitor | 0.1µF (104J), 630V CBB22 |
| Varistor Type | MOV 10D471K |
| Nominal Varistor Voltage | 470V |
| Frequency Range | 50Hz / 60Hz AC Systems |
| Operating Temperature | -40°C to +85°C |
| Polarity | Non-Polar |
| Connection Type | 2-Pin Screw Terminal |
| Protection Functions | Voltage Spike Suppression, EMI Reduction |
| Module Length | Approximately 18–35 mm (depending on version) |
| Module Width | Approximately 12–14 mm |
| Module Height | Approximately 17–40 mm |
| Weight | Approximately 6 g |
Applications
- Relay contact protection
- Motor switching circuits
- Solenoid valve control systems
- Transformer protection
- Contactor suppression circuits
- Thyristor and triac protection
- Solid State Relay (SSR) output protection
- Industrial automation equipment
- Home automation systems
- Power control panels
- Electromagnetic interference reduction
- Microcontroller-based switching systems