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RCD

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Legrand 63A DX³ 4 Pole RCD Add on Module with Measurement & Metering, 4106 57
  • Immunity to false tripping

  • Di-electric test button inbuilt

Legrand 125A DX³ 4 Pole RCD Add on Module with Measurement & Metering, 4106 58
  • Scroll button for easy readings

  • Di-electric test button inbuilt

Legrand 125A DX³ 2 Pole RCD Add on Module AC Type, 4105 69
  • Terminal cover for locking

  • Easy and fast association mechanism

Legrand 125A DX³ 4 Pole RCD Add on Module HPI Type, 4106 38
  • For mounting on the right-hand side of 1.5 module per

  • 70 sq mm terminals

Legrand 125A DX³ 2 Pole RCD Add on Module AC Type, 4105 68
  • For mounting on the right-hand side of 1.5 module per

  • Immunity to false tripping

Legrand 125A DX³ 4 Pole RCD Add on Module AC Type, 4106 25
  • For mounting on the right-hand side of 1.5 module per

  • AC type: Detect AC components faults

Legrand 125A DX³ 4 Pole RCD Add on Module AC Type, 4106 26
  • HPI Type: Detect faults with AC and DC components increased

  • For mounting on the right-hand side of 1.5 module per

Legrand 125A DX³ 2 Pole RCD Add on Module AC Type, 4105 71
  • HPI Type: Detect faults with AC and DC components increased

  • Immunity to false tripping

Legrand 125A DX³ 4 Pole RCD Add on Module HPI Type, 4106 39
  • Easy and fast association mechanism

  • AC type: Detect AC components faults

Legrand 125A DX³ 2 Pole RCD Add on Module HPI Type, 4105 78
  • Easy and fast association mechanism

  • AC type: Detect AC components faults

Legrand 125A DX³ 2 Pole RCD Add on Module HPI Type, 4105 79
  • Terminal cover for locking

  • HPI Type: Detect faults with AC and DC components increased

Legrand 125A DX³ 2 Pole RCD Add on Module HPI Type, 4105 82
  • Immunity to false tripping

  • Terminal cover for locking

Legrand 125A DX³ 4 Pole RCD Add on Module HPI Type, 4106 42
  • Easy and fast association mechanism

  • For mounting on the right-hand side of 1.5 module per

Legrand 125A DX³ 4 Pole RCD Add on Module AC Type, 4106 29
  • Terminal cover for locking

  • Easy and fast association mechanism

Indoasian Optipro RCD Add On Block Accessories, 811583
  • Shunt trip: 12V to 48V AC/DC

  • Upto Three Number of Accessory on a Modular Device

Indoasian Optipro RCD Add On Block Accessories, 811584
  • Common Accessories for Entire Range

  • Undervoltage: 24V & 48V AC/DC

Indoasian Optipro RCD Add On Block Accessories, 811585
  • Easy To Install

  • Upto Three Number of Accessory on a Modular Device

Indoasian Optipro RCD Add On Block Accessories, 811582
  • Common Accessories for Entire Range

  • Upto Three Number of Accessory on a Modular Device

Indoasian Optipro RCD Add On Block Accessories, 811581
  • Easy To Install

  • Common Accessories for Entire Range

Indoasian Optipro RCD Add On Block Accessories, 811580
  • Common Accessories for Entire Range

  • Upto Three Number of Accessory on a Modular Device

Indoasian Optipro 6A-32A 4 Pole RCD Add On Block, 811676, Breaking Capacity: 10kA
  • Retro Fit Type Clip On Accessory

  • Dual Position DIN Clip

Indoasian Optipro 40A & 63A 2 Pole RCD Add On Block, 811669, Breaking Capacity: 10kA
  • Retro Fit Type Clip On Accessory

  • Dual Position DIN Clip

Indoasian Optipro 6A-32A 2 Pole RCD Add On Block, 811666, Breaking Capacity: 10kA
  • Retro Fit Type Clip On Accessory

  • Dual Position DIN Clip

Indoasian Optipro 6A-32A 2 Pole RCD Add On Block, 811668, Breaking Capacity: 10kA
  • Retro Fit Type Clip On Accessory

  • Dual Position DIN Clip

Indoasian Optipro 40A & 63A 4 Pole RCD Add On Block, 811675, Breaking Capacity: 10kA
  • Retro Fit Type Clip On Accessory

  • Dual Position DIN Clip

Indoasian Optipro 6A-32A 2 Pole RCD Add On Block, 811670, Breaking Capacity: 10kA
  • Dual Position DIN Clip

  • Retro Fit Type Clip On Accessory

Indoasian Optipro 40A & 63A 4 Pole RCD Add On Block, 811677, Breaking Capacity: 10kA
  • Retro Fit Type Clip On Accessory

  • Dual Position DIN Clip

Indoasian Optipro 6A-32A 4 Pole RCD Add On Block, 811674, Breaking Capacity: 10kA
  • Retro Fit Type Clip On Accessory

  • Dual Position DIN Clip

Indoasian Optipro 40A & 63A 2 Pole RCD Add On Block, 811667, Breaking Capacity: 10kA
  • Retro Fit Type Clip On Accessory

  • Dual Position DIN Clip

Indoasian Optipro 40A & 63A 2 Pole RCD Add On Block, 811671, Breaking Capacity: 10kA
  • Dual Position DIN Clip

  • Retro Fit Type Clip On Accessory

Indoasian Optipro 40A & 63A 4 Pole RCD Add On Block, 811673, Breaking Capacity: 10kA
  • Retro Fit Type Clip On Accessory

  • Dual Position DIN Clip

Indoasian Optipro 6A-32A 4 Pole RCD Add On Block, 811672, Breaking Capacity: 10kA
  • Dual Position DIN Clip

  • Retro Fit Type Clip On Accessory

Eaton PBSM 40A DP RCD Add-on Module, 262327
By: Eaton
Available on Request
₹2,927
  • Line voltage-independent tripping

  • Add-on residual current unit

Eaton PBSM 63A DP RCD Add-on Module, 262428
By: Eaton
Available on Request
₹2,927
  • Add-on residual current unit

  • Line voltage-independent tripping

Protect Yourself Against Electronic Shocks With the RCD

An RCD is a life-saving device that is essential for any residential or commercial establishment. It is designed to prevent fatal electric shocks when someone accidentally touches live electrical components such as bare wires. The device can offer personal protection to people in your home or office, much better than ordinary circuit breakers and fuses. It can also provide some level of protection against electrical fires. Thus, having this beneficial electronic instrument established in your place is highly necessary.

An RCD, or residual current device, constantly monitors the flow of electric current in a circuit through a test coil. Under normal conditions, the same current flows in the live and neutral wires in opposite directions. However, more current flows in the live wire when leakage occurs due to damaged insulation or equipment faults. 

This imbalance causes a small voltage in the test coil, which the RCD senses. When it exceeds 30mA, the electromechanical relay or electronic circuit in the RCD triggers; this instantly switches off the power by opening the breakers, protecting you from severe shocks. The action is very fast – under 30 milliseconds!


Vital Uses and Applications of RCD Switches  

Under government electrical codes and guidelines, installing RCD units is now mandatory or recommended in residences, commercial establishments and industries. Let us see where RCDs play a critical, lifesaving role:

  • Homes: Prevents shocks from damaged appliances and wiring. It is especially useful in kitchens and bathrooms with wet floors.
     
  • Offices and shops: With a high density of electrical equipment like computers, printers and lighting, RCDs minimise fire and shock risks.
     
  • Medical facilities: Their fast response protects patients from leakage-related accidents.
     
  • Schools and colleges: Students are safer from shocks despite curiosity-driven experiments.
     
  • Hospitality sector: Guest safety gets a major boost in hotels, restaurants, etc. 
     
  • Construction sites: Temporary wiring often suffers damage, leading to leaks – RCDs provide security.
     
  • Industrial facilities: Quickly cut power to prevent fires, equipment damage and worker accidents.
     
  • Rural/urban housing: Essential due to inferior wiring quality and lack of maintenance.


Choosing RCD Breaker Type - Standard, S Type or G Type Unit  

While the basic function is the same, RCDs come in three broad varieties that protect against different kinds of faults:

  • Standard RCD Switch: Sensitive to both leakage currents – when live wiring contacts earth (ground) and neutral wiring contacts earth. Offers protection against earth faults.
     
  • RCD S-type: Detects only when live wiring touches the earth. Immune to nuisance tripping from neutral to earth faults.
     
  • RCD G-type: Special sensitive design detects small, steady leakage currents under 30mA and larger momentary leakage spikes above 30mA. Gives the best shock prevention.


RCD Specifications - Rating, Number of Poles, and Sensitivity

Key parameters help choose the right RCD model and size for your needs:

  • Current Rating: RCDs come in various current specs like 16A, 32A, 40A, 63A etc. The higher the rating, the more current they can safely break. Select as per the current rating of your main circuit breaker.
     
  • Poles: Single pole RCDs monitor only the live wire. Two-pole and four-pole versions monitor multiple lines as used in commercial and industrial settings.
     
  • Sensitivity: Expressed in milliamperes (mA). Standard RCDs detect and break leaks above 30mA. More sensitive models trigger leakage even at 10mA or 15mA.
     
  • Many Lives Protected: Each RCD can monitor one or more downstream circuits. So, the number of lives getting shock prevention depends on its placement.  

Additionally, note the breaking speed, mechanical operation count for electromechanical types, and availability of failure alarm contact while choosing RCD models.
 

Key Benefits of Installing Residual Current Breakers

1. Prevention of lethal electric shocks: The core function of RCDs is to save lives by cutting power within milliseconds when dangerous leakage exceeds the safe 30mA limit. This prevents people from getting a severe or even fatal shock.
 

2. Avoid electrical fires: Leakage often causes sparks that can ignite nearby flammable material. RCDs cut off power instantly before such fires can grow.
 

3. Protection of equipment: When an appliance develops a fault, leakage can damage or spread through wiring. Timely power cut-off by RCDs prevents such harm.
 

4. Peace of mind: RCDs afford you total peace of mind, knowing that your probability of electric mishaps is reduced hugely. This sense of safety and security is invaluable.
 

5. Compliance with electrical codes: Installation of RCD breakers at the main board is mandated as per safety codes and regulations. Using them ensures compliance.

6. Lower insurance premiums: Insurers recognise residences with RCDs as lower risk. Installing them makes you eligible for discounts on home insurance premiums.

 

Different Types of RCDs Available in the Market  

While the basic working principle is similar, residual current devices utilise different tripping mechanisms and components tailored to various applications:

1. Electromechanical RCD: Uses a test coil and relay for sensing and integrating leakage current. The solenoid trips the latch on output contacts. Robust, suited for high currents.
 

2. Electronic RCD: More compact design with semiconductor electronic circuitry and thyristors for faster and more sensitive tripping. Resets automatically.
 

3. RCBO: Combines RCD block with MCB to cut power safely even for overloads besides leakages. Common in homes.
 

4. RCCB: Same as RCD but also trips for small overcurrents temporarily. Used in specialised applications.
 

5. Split RCD: Separates sensing and tripping circuits for specialist use like hospitals. Custom settable leakage limit.
 

6. Timer-Based RCD: Prevents nuisance tripping by allowing temporary small leaks. Used where momentary spikes occur often.
 

So, while standard RCDs suffice in most installations, specialised versions enhance sensitivity and reliability for critical applications.


How Does The Residual Current Device Operate?

The residual current device is a sensitive safety instrument. It can automatically switch off the electricity supply if there is any fault in the line. It is designed to effectively protect against dangers like electrocution and fire that can be caused due to earth faults. This can take place if wires get cut accidentally, and you happen to touch them by mistake. It can also happen if any faulty electrical appliance gets overheated.

 

By installing this device, it will constantly monitor the current flowing through the circuit. If it detects that the electricity is flowing in a different path, it will quickly turn off the electricity supply to the circuit. RCD can thus prevent and reduce the risks of serious injuries caused by electric shocks and even deaths.


Why Purchase RCD Online from Moglix?

With the wide range of RCD switches and top brands available at Moglix, you can choose the RCD sockets best suited to your needs. Our market-leading prices help you meet safety compliance affordably. We also offer handy RCD accessories like testers for periodically verifying correct functioning. Bulk orders enjoy the discounted RCD switch price from Moglix, the exclusive B2B partner of Schneider Electric.

Our supply chain expertise and customer support help you seamlessly install and use RCD devices. Join 500K+ delighted clients enjoying convenient, cost-effective safety upgrades with Moglix.