The Siemens 5SV3646-6RC is a SENTRON 5SV3 residual current operated circuit breaker (RCCB) designed for protection against residual currents in suitable three-phase AC electrical installations. It is a 4-pole / 3+N, Type A RCCB with a 63 A rated current and 300 mA rated residual operating current. Siemens technical documentation identifies the corresponding 5SV3646-6 as a 4-pole Type A RCCB, 63 A, 300 mA, 400 V AC, with instantaneous operation.
The supplied India product designation specifies 415 V and 4MW, making this model suitable for compatible three-phase-plus-neutral distribution and protection applications.
The 5SV3646-6RC belongs to the Siemens SENTRON 5SV3 RCCB family. Its primary purpose is to detect residual current and disconnect the protected circuit when the residual-current level reaches the specified operating threshold.
The 4-pole / 3+N configuration allows the device to be used on three-phase systems with neutral and makes it suitable for industrial, commercial and electrical-distribution applications.
Siemens also shows 5SV3646-6 as the successor to the discontinued 5SM3646-6 article, confirming the product family transition.
The RCCB has a rated current of 63 A.
This makes it suitable for compatible three-phase distribution circuits and feeders where a 63 A residual-current protection device is required.
The protected circuit should be designed so that the RCCB remains within its specified electrical ratings and installation conditions.
The 5SV3646-6RC has a rated residual operating current of 300 mA.
When the residual current reaches the specified operating threshold, the RCCB trips and disconnects the protected circuit.
A 300 mA residual-current threshold is commonly considered for selected distribution and equipment protection schemes. The appropriate sensitivity must be selected according to the complete electrical protection design and applicable standards.
The device is a Type A RCCB.
Unlike Type AC devices, Type A RCCBs are intended for residual currents that may include pulsating DC components in addition to AC residual current. This makes Type A protection relevant for installations containing suitable electronic and rectifier-based loads.
The correct RCCB type should always be selected according to the residual-current characteristics of the equipment and installation.
The 5SV3646-6RC has 4 poles, making it suitable for three-phase plus neutral electrical systems.
This arrangement allows the three phases and neutral to be incorporated into the residual-current protection system.
Typical applications include:
Three-phase distribution boards
Industrial feeders
PCC panels
MCC panels
Commercial electrical panels
Sub-distribution boards
Machine supply circuits
Factory electrical systems
The supplied India product description identifies the device for 415 V AC systems.
Siemens' technical documentation for the corresponding 5SV3646-6 specifies 400 V AC rated operating voltage.
For the SB Smart product page, the 415 V India-market designation can be retained, while actual installation selection should be based on the applicable Siemens rating and the electrical system design.
The 5SV3646-6RC is an instantaneous RCCB. Siemens' available product documentation identifies the device as instantaneous rather than short-time delayed.
This means the RCCB responds without an intentionally introduced short-time delay when the specified residual-current threshold is reached.
Siemens specifies a 10 kA short-circuit current rating for the corresponding 5SV3646-6 article.
The RCCB should still be coordinated with appropriate upstream overcurrent protection and the prospective short-circuit current of the installation.
An RCCB primarily provides residual-current protection and should not be treated as a substitute for an MCB or MCCB for overload and short-circuit protection unless the complete protection arrangement specifically provides those functions.
The India product description specifies 4MW, meaning 4 module width.
The 4MW designation refers to the physical modular width and does not mean a 4 MW power rating.
The compact modular format is suitable for:
Distribution boards
Electrical control panels
PCC panels
Sub-distribution boards
Commercial switchboards
Industrial protection assemblies
The 5SV3646-6RC is designed for modular installation in suitable electrical distribution assemblies.
Siemens specifies size 1 according to DIN 43880 for the corresponding article and a 60 mm grid spacing.
This supports integration into conventional modular protection arrangements.
Siemens specifies IP20 protection when installed in a suitable distribution board with connected conductors.
The RCCB should therefore be installed inside an appropriate electrical enclosure or distribution assembly.
Residual current occurs when part of the electrical current flows outside its intended path, such as through an unintended leakage path to earth.
The RCCB monitors the current balance and disconnects the protected circuit when the residual current reaches the configured 300 mA threshold.
This provides an additional layer of residual-current protection within the overall electrical protection system.
The 5SV3646-6RC can be considered for compatible:
Industrial distribution boards
Commercial electrical panels
Three-phase feeder circuits
PCC and MCC panels
Factory electrical systems
Building distribution systems
Machine supply circuits
Sub-distribution boards
The combination of:
63 A + 300 mA + Type A + 4-pole / 3+N
makes the device relevant for selected three-phase residual-current protection applications where Type A characteristics are required.
This is particularly relevant when connected equipment can produce residual-current waveforms containing pulsating DC components.
Type A RCCBs are suitable for many installations containing modern electronic equipment where residual currents may not be purely sinusoidal.
Potential applications can include systems containing:
Electronic power supplies
Rectifier circuits
Variable-speed equipment
Automation systems
Modern industrial control equipment
The exact suitability must be evaluated against the residual-current waveform produced by the connected equipment.
RCCBs should be included in an appropriate electrical inspection and testing program.
The test function should be operated according to the manufacturer's instructions and applicable maintenance requirements to verify correct residual-current tripping.
Regular testing helps confirm that the protective mechanism remains operational.
Before selecting the 5SV3646-6RC, verify:
Rated current: 63 A
Residual-current sensitivity: 300 mA
RCCB type: Type A
Pole configuration: 4-pole / 3+N
System voltage compatibility
Upstream overcurrent protection
Available panel space: 4 module width
Conductor size and termination
Connected equipment leakage-current characteristics
Applicable national electrical regulations
The RCCB type should be selected according to the actual equipment and installation design.
The Siemens 5SV4646-0RC is a 63 A, 4-pole, Type AC, 300 mA RCCB, while 5SV3646-6RC is a 63 A, 4-pole, Type A, 300 mA device.
Therefore:
5SV3646-6RC → Type A, 63 A, 300 mA
5SV4646-0RC → Type AC, 63 A, 300 mA
The main difference is the residual-current type.
Siemens also lists 5SV3646-4 as a 63 A, 4-pole, Type B, 300 mA, short-time-delayed RCCB for demanding residual-current applications.
Therefore:
5SV3646-6RC → Type A, instantaneous
5SV3646-4 → Type B, short-time delayed
The correct type must be selected according to the residual-current waveform and protection-coordination requirements.
Siemens lists 5SV3646-8KL as a 63 A, 4-pole, Type A, selective, 300 mA RCCB.
Therefore:
5SV3646-6RC → Type A, instantaneous
5SV3646-8KL → Type A, selective
Selective RCCBs are used where coordination with upstream residual-current protection requires intentional time grading.
The 5SV3 Type A family contains different residual-current sensitivities.
The 5SV3646-6RC is specifically the 300 mA version, so it should not be substituted with a 30 mA device unless the protection design calls for that lower threshold.
The 5SV3646-6RC is the 300 mA version. Other Type A devices in the Siemens 5SV3 family may have different residual operating-current values.
The article number should always be checked carefully when selecting a replacement because the residual-current sensitivity directly affects the protection function.
A Type AC 63 A RCCB with a lower residual-current sensitivity is a different product selection.
The 5SV3646-6RC should be selected where both Type A characteristics and 300 mA sensitivity are required.
The Siemens 5SV3646-6RC is relevant for:
Electrical panel builders
Industrial buyers
Electrical contractors
Commercial electrical contractors
Facility-maintenance teams
OEMs
Machine builders
Electrical distributors
Factory maintenance departments
Electrical product dealers
For SB Smart, the product is positioned as a Siemens SENTRON 5SV3 Type A RCCB for 63 A three-phase residual-current protection.
| Specification | Details |
|---|---|
| Brand | Siemens |
| Product Family | SENTRON 5SV3 |
| Article Number | 5SV3646-6RC |
| Product Type | Residual Current Operated Circuit Breaker (RCCB) |
| RCCB Type | Type A |
| Rated Current | 63 A |
| Number of Poles | 4 Pole / 3+N |
| Residual Operating Current | 300 mA |
| Operation | Instantaneous |
| Rated Operating Voltage | 400 V AC for corresponding Siemens article |
| India Market Description | 415 V AC, 4MW |
| Module Width | 4 Modules |
| DIN Size | Size 1 according to DIN 43880 |
| Grid Spacing | 60 mm |
| Short-Circuit Current Rating | 10 kA |
| Rated Insulation Voltage | 2,000 V |
| Protection Degree | IP20 when installed in suitable distribution-board conditions |
| Operating Frequency | 50/60 Hz |
The specifications above are based on Siemens documentation for 5SV3646-6 and the supplied India product designation.
Siemens SENTRON 5SV3 RCCB
Article number 5SV3646-6RC
63 A rated current
4-pole / 3+N configuration
300 mA residual-current sensitivity
Type A
Instantaneous operation
400 V AC technical rating for the corresponding Siemens article
415 V India-market designation
4-module modular format
10 kA short-circuit current rating
2,000 V rated insulation voltage
60 mm grid spacing
DIN modular installation
Suitable for three-phase-plus-neutral residual-current protection
Type A protection: Suitable for compatible installations where residual currents can include pulsating DC components.
63 A rating: Suitable for compatible higher-current three-phase circuits.
300 mA sensitivity: Provides residual-current protection at the specified operating threshold.
4-pole / 3+N design: Suitable for three-phase plus neutral systems.
Instantaneous operation: Provides residual-current disconnection without intentional short-time delay.
4-module format: Supports standard modular panel installation.
10 kA short-circuit rating: Supports coordination with suitable upstream protective equipment.
SENTRON 5SV3 design: Provides a Siemens solution for advanced residual-current protection.
Industrial compatibility: Suitable for selected applications involving modern electronic loads.
The Siemens 5SV3646-6RC is a 63 A, 4-pole / 3+N, Type A RCCB with 300 mA residual-current sensitivity, designed for suitable three-phase electrical installations. Siemens documentation identifies the corresponding 5SV3646-6 as a 4-pole Type A, 63 A, 300 mA, 400 V AC instantaneous RCCB with a 10 kA short-circuit current rating.
It is especially relevant where the electrical installation includes equipment that may generate residual currents with pulsating DC components and therefore requires Type A rather than Type AC characteristics.
For SB Smart, this product is best presented as a Siemens SENTRON 5SV3 Type A residual-current circuit breaker for 63 A three-phase electrical protection across India.
SB Smart supplies Siemens SENTRON/Betagard RCCBs and industrial electrical protection products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major Indian cities.
Major delivery locations include:
Faridabad
Delhi
Gurgaon/Gurugram
Delhi NCR
Noida
Greater Noida
Haryana
Punjab
Mumbai
Pune
Ahmedabad
Bengaluru
Hyderabad
Chennai
Kolkata
Jaipur
Chandigarh
Lucknow
Indore
Surat
Vadodara
Nagpur
Coimbatore
And other major cities across India
The 5SV3646-6RC is a Siemens SENTRON 5SV3 residual-current operated circuit breaker rated at 63 A, with 4 poles / 3+N, 300 mA residual-current sensitivity and Type A characteristics.
It has 4 poles, suitable for three-phase plus neutral applications.
The rated current is 63 A.
The rated residual operating current is 300 mA.
It is a Type A RCCB, suitable for compatible AC residual currents and pulsating DC residual-current components.
Yes. Siemens identifies the corresponding 5SV3646-6 as instantaneous.
Siemens' technical data for the corresponding 5SV3646-6 specifies 400 V AC, while the India-facing product description uses 415 V.
4MW means 4 module width in the modular installation format. It does not mean a 4 MW power rating.
The specified short-circuit current rating is 10 kA.
5SV3646-6RC: 63 A, 4-pole, Type A, 300 mA.
5SV4646-0RC: 63 A, 4-pole, Type AC, 300 mA.
5SV3646-6RC: Type A, instantaneous, 63 A, 300 mA.
5SV3646-4: Type B, short-time delayed, 63 A, 300 mA.
SB Smart supplies Siemens SENTRON 5SV3 Type A RCCBs and industrial electrical protection products in India for panel builders, electrical contractors, industrial buyers, maintenance teams and distribution applications.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 5SV3 |
| Part Number | 5SV3646-6RC |
| Product Type | RCCB (Residual Current Circuit Breaker) |
| Number of Poles | 4 Pole (3P+N) |
| Rated Current (In) | 63A |
| Rated Residual Current (IΔn) | 300mA |
| Sensitivity Type | Type A |
| Rated Voltage (Un) | 230/400V AC |
| Rated Frequency | 50 Hz |
| Mounting Type | DIN Rail |
| Short-Circuit Current Rating | 10kA |
| Rated Insulation Voltage (Ui) | 2000V |
| Rated Impulse Withstand Voltage (Uimp) | 6kV |
| Protection Class | IP20 |
| Mechanical Life | 10,000 Operations |
| Operating Temperature | -25°C to +45°C |
| Terminal Capacity | 0.75 mm² to 35 mm² |
| Tripping Characteristic | Instantaneous |
| Standard Compliance | IEC 61008-1 |
| Application | Industrial, Commercial & Distribution Systems |
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