The Siemens 5SU1344-1RC32 is a SENTRON / Betagard 5SU1 Residual Current Circuit Breaker with Overcurrent Protection (RCBO) designed to combine overload, short-circuit and residual-current protection in a single device. The exact Siemens product designation specifies 32 A, 4-pole, 8 modules, C characteristic, Type AC and 30 mA residual-current sensitivity. The technical datasheet specifies 415 V AC, 50 Hz, 10 kA short-circuit breaking capacity according to EN 61009-1, and 15 kA according to IEC 60947-2. Siemens also states that use of these devices is not permitted in all countries, so national installation regulations must be observed.
The 5SU1344-1RC32 belongs to the Siemens SENTRON / Betagard 5SU1 RCBO family.
An RCBO integrates:
Overload protection
Short-circuit protection
Residual-current protection
in one device.
This integrated construction can simplify circuit-level protection compared with separate MCB and RCCB arrangements. Siemens documentation includes 5SU1344-1RC32 within the 5SU1 four-pole RCBO family.
The RCBO has a rated current of 32 A.
It is suitable for compatible three-phase circuits and feeders designed around a 32 A protective device.
The final selection should consider:
Connected load
Cable ampacity
Installation method
Ambient conditions
Prospective short-circuit current
Protection coordination
Applicable electrical regulations
The exact product datasheet confirms 32 A operational current at AC rated value.
The 5SU1344-1RC32 uses a C tripping characteristic.
The C curve is suitable for compatible circuits where moderate starting or inrush current can occur during normal operation.
Potential applications include:
Pumps
Fans
Motors
Control transformers
Contactors
Solenoids
Industrial auxiliary equipment
Selected machinery
The exact Siemens technical data confirms the C tripping characteristic.
The device uses Type AC residual-current protection.
Type AC protection is intended for compatible sinusoidal alternating residual currents.
The leakage-current waveform of connected equipment should be evaluated before selecting Type AC. Equipment capable of producing pulsating DC or other residual-current components may require a different residual-current type.
The exact Siemens article is specified as Type AC.
The 5SU1344-1RC32 has a rated residual operating current of 30 mA.
When the residual-current condition reaches the applicable operating threshold, the RCBO disconnects the protected circuit.
The 30 mA sensitivity should be selected according to the complete electrical protection design and applicable installation regulations. The exact datasheet confirms 30 mA tripping fault current.
The RCBO has 4 poles, making it suitable for compatible three-phase-plus-neutral electrical systems.
The four-pole arrangement incorporates the three phases and neutral into the circuit protection arrangement.
Typical applications include:
Three-phase distribution boards
Industrial feeder circuits
PCC panels
MCC panels
Commercial electrical panels
Machine power circuits
Factory electrical systems
Sub-distribution boards
The exact technical data specifies 4 poles and 4 protected poles.
The exact Siemens technical data specifies 415 V AC rated supply voltage and 50 Hz operating frequency.
This makes the device suitable for compatible three-phase low-voltage electrical systems where the system voltage and protection requirements match the RCBO.
The 5SU1344-1RC32 has a 10 kA short-circuit breaking capacity according to EN 61009-1.
The same technical data specifies:
10 kA according to EN 60898
15 kA according to IEC 60947-2
10 kA rated residual switching capacity according to IEC 61009-1
Energy limitation class 3
The prospective short-circuit current at the installation point should still be verified during system design.
The main advantage of the 5SU1344-1RC32 is its integrated protection arrangement.
A conventional circuit may use:
MCB + RCCB
An RCBO combines these functions:
RCBO = Overload + Short Circuit + Residual Current Protection
This can simplify panel construction and provide dedicated circuit-level protection.
The supplied Siemens product designation identifies this article as an 8-module RCBO.
The technical data, however, lists a physical width of 126 mm and 7 modular width units.
For the SB Smart product page, the supplied market-facing description “8 modules” can be retained in the product title, while the technical table can separately mention 7 modular width units / 126 mm physical width.
The module designation refers to physical panel space and does not represent a power rating.
The technical data specifies approximately:
Height: 90 mm
Width: 126 mm
Depth: 70 mm
Installation depth: 70 mm
Modular width units: 7
Mounting position: Any
These dimensions are useful for panel builders when planning DIN-rail and enclosure space.
The Siemens 5SU1 RCBO family is designed for modular electrical installations.
The 5SU1344-1RC32 can be integrated into suitable:
Distribution boards
Industrial control panels
PCC panels
MCC panels
Commercial switchboards
Machine panels
Factory electrical enclosures
Installation should follow Siemens' current mounting and wiring instructions.
The technical data confirms neutral conductor switching.
This supports the four-pole arrangement used in compatible three-phase-plus-neutral applications.
The technical data specifies that the power supply can be connected from either the top or bottom.
This provides practical flexibility during panel wiring.
The overcurrent section protects the connected circuit against sustained excessive current caused by overload.
The 32 A rating should be coordinated with:
Cable ampacity
Connected load
Installation method
Ambient temperature
Protection-coordination requirements
The RCBO also provides integrated short-circuit protection.
Its 10 kA EN 61009-1 breaking capacity should be evaluated against the prospective fault current at the installation point.
Residual current occurs when part of the electrical current flows through an unintended path, such as leakage toward earth.
The RCBO monitors this condition and disconnects the protected circuit when the specified 30 mA residual-current threshold is reached.
This adds residual-current protection to the integrated overload and short-circuit functions.
The C characteristic can be suitable for compatible loads with moderate starting or inrush current.
Potential applications include:
Pumps
Fans
Motors
Solenoids
Contactors
Control transformers
Industrial machinery
Automation equipment
The actual application should be evaluated according to the load's starting characteristics and protection coordination.
The 5SU1344-1RC32 is intended for compatible circuits with suitable sinusoidal AC residual currents.
For modern equipment containing rectifiers, variable-speed drives or other power electronics, the required residual-current type should be checked before selecting Type AC.
The 5SU1344-1RC32 can be considered for compatible:
Industrial distribution boards
Three-phase equipment feeders
PCC panels
MCC panels
Machine power circuits
Commercial switchboards
Factory electrical systems
Sub-distribution boards
Building electrical panels
A typical arrangement can be:
Incoming Supply → RCBO → Protected Three-Phase Load
The complete protection design should consider:
Prospective short-circuit current
Cable capacity
Load current
C-curve characteristics
30 mA residual-current sensitivity
Upstream protection
Applicable electrical standards
RCBOs should be included in an appropriate electrical inspection and testing program.
The test function should be operated according to Siemens' instructions and applicable maintenance requirements to verify residual-current protection.
Regular testing helps confirm that the protection mechanism remains operational.
Before selecting the 5SU1344-1RC32, verify:
Rated current: 32 A
Residual-current sensitivity: 30 mA
Residual-current type: Type AC
Tripping characteristic: C
Pole configuration: 4-pole
Rated voltage: 415 V AC
Operating frequency: 50 Hz
Short-circuit breaking capacity: 10 kA according to EN 61009-1
Panel space requirements
Cable size and installation method
Load starting characteristics
Applicable national installation regulations
The exact Siemens product description explicitly states:
“Use of these devices is not permitted in all countries. Observe national installation regulations!”
This warning should remain visible on the SB Smart product page because the permitted use of this particular RCBO depends on the electrical installation rules applicable in the country of installation.
For India, the installer should verify the applicable Indian requirements and current Siemens documentation before installation.
The 5SU1344-7RC32 is the corresponding 32 A, 4-pole, 7-module, C-characteristic, Type A, 30 mA configuration.
Therefore:
5SU1344-1RC32 → Type AC, 32 A, 30 mA
5SU1344-7RC32 → Type A, 32 A, 30 mA
The main difference is the residual-current type, with the product designation also differing in modular configuration. Siemens documentation lists both articles in the 5SU1 range.
The 5SU1344-2RC32 is the corresponding 32 A, 4-pole, Type AC, 30 mA RCBO with a D characteristic. Siemens documentation lists the article in the same 5SU1 family.
Therefore:
5SU1344-1RC32 → C characteristic
5SU1344-2RC32 → D characteristic
The principal difference is the overcurrent tripping characteristic.
A Type AC, C-characteristic 32 A RCBO with 100 mA sensitivity belongs to a different 5SU1 configuration.
Therefore:
5SU1344-1RC32 → 32 A, Type AC, 30 mA
The residual-current sensitivity should always be checked before selecting an alternative.
The 5SU1644-1RC32 is the corresponding 32 A, 4-pole, Type AC, C-characteristic, 300 mA configuration. Siemens documentation lists both 5SU1344-1RC32 and 5SU1644-1RC32 in the 5SU1 product family.
Therefore:
5SU1344-1RC32 → 32 A, Type AC, 30 mA
5SU1644-1RC32 → 32 A, Type AC, 300 mA
The main difference is residual-current sensitivity.
The 5SU1344-1RC40 is the corresponding 40 A, 4-pole, Type AC, C-characteristic, 30 mA configuration. Siemens documentation lists both articles in the same family.
Therefore:
5SU1344-1RC32 → 32 A
5SU1344-1RC40 → 40 A
The main difference is rated current.
The 5SU1344-1RC63 is the corresponding higher-rated configuration.
Therefore:
5SU1344-1RC32 → 32 A
5SU1344-1RC40 → 40 A
5SU1344-1RC63 → 63 A
The correct current rating should be selected according to the protected circuit and conductor capacity. Siemens documentation lists all three articles in this family.
The Siemens 5SU1354 and 5SU1624 families contain 2-pole RCBO configurations for compatible single-phase applications.
The 5SU1344-1RC32 is a 4-pole device intended for compatible three-phase-plus-neutral systems.
The pole configuration should therefore be checked carefully before selecting a replacement.
The 5SU1344-1RC32 is an RCBO, not simply an RCCB.
An RCCB primarily provides residual-current protection and normally requires separate overcurrent protection.
An RCBO combines:
Residual-current protection + overload protection + short-circuit protection
in one device.
The Siemens 5SU1344-1RC32 is relevant for:
Electrical panel builders
Industrial buyers
Electrical contractors
OEMs
Machine builders
Factory maintenance teams
Commercial electrical contractors
Electrical distributors
Automation system integrators
Electrical product dealers
For SB Smart, the product is positioned as a Siemens SENTRON / Betagard 5SU1 Type AC RCBO for 32 A three-phase circuit protection with C characteristic and 30 mA sensitivity.
Siemens SENTRON / Betagard 5SU1 RCBO
Article number 5SU1344-1RC32
32 A rated current
4-pole configuration
8-module product designation
7 modular width units in the technical data
Type AC residual-current protection
30 mA residual-current sensitivity
C tripping characteristic
415 V AC rated voltage
50 Hz operating frequency
10 kA EN 61009-1 short-circuit breaking capacity
15 kA IEC 60947-2 switching capacity
10 kA residual switching capacity
440 V insulation voltage
4 kV surge-voltage resistance
Neutral conductor switching
Top or bottom power-supply connection
Integrated overload and short-circuit protection
Integrated residual-current protection
Suitable for compatible three-phase-plus-neutral circuits
Combined protection: Integrates overload, short-circuit and residual-current protection in one device.
32 A rating: Suitable for compatible three-phase circuits and feeders.
Type AC protection: Designed for compatible sinusoidal AC residual currents.
30 mA sensitivity: Provides residual-current protection at the specified operating threshold.
C characteristic: Suitable for compatible loads with moderate inrush current.
4-pole construction: Suitable for compatible three-phase-plus-neutral systems.
Compact modular construction: Suitable for distribution boards and electrical panels.
10 kA breaking capacity: Provides substantial short-circuit interruption capability within specified conditions.
Neutral switching: Supports the four-pole circuit arrangement.
Flexible supply connection: Power can be connected from the top or bottom.
The Siemens 5SU1344-1RC32 combines 32 A overcurrent protection, C-curve tripping and Type AC 30 mA residual-current protection in a four-pole RCBO.
The exact Siemens technical data confirms 415 V AC, 50 Hz, 32 A, 4-pole configuration, Type AC, 30 mA sensitivity, C characteristic and 10 kA EN 61009-1 short-circuit breaking capacity.
For SB Smart, this product is best presented as a Siemens Betagard/SENTRON 5SU1 Type AC RCBO for 32 A, 30 mA three-phase circuit protection with C characteristic across India.
The country-use warning should remain visible on the product page because Siemens explicitly states that use of these devices is not permitted in all countries and national installation regulations must be observed.
SB Smart supplies Siemens SENTRON/Betagard RCBOs, RCCBs and industrial electrical protection products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major Indian cities.
The 5SU1344-1RC32 is a Siemens SENTRON / Betagard 5SU1 RCBO rated at 32 A, with 4 poles, C characteristic, Type AC residual-current protection and 30 mA sensitivity.
It is an RCBO, meaning it combines residual-current and overcurrent protection in one device.
The rated current is 32 A.
The rated residual operating current is 30 mA.
It uses Type AC residual-current protection.
It has a C tripping characteristic.
It has 4 poles, suitable for compatible three-phase-plus-neutral applications.
The product designation states 8 modules, while the technical data specifies 7 modular width units and a physical width of 126 mm.
The exact Siemens technical data specifies 415 V AC at 50 Hz.
The specified short-circuit breaking capacity is 10 kA according to EN 61009-1, with 15 kA according to IEC 60947-2 for the applicable switching-capacity specification.
No. Siemens explicitly states that use of these devices is not permitted in all countries and that national installation regulations must be observed.
5SU1344-1RC32: 32 A, 4-pole, Type AC, 30 mA, C characteristic.
5SU1344-7RC32: 32 A, 4-pole, Type A, 30 mA, C characteristic.
The main difference is the residual-current type. Siemens documentation lists both articles.
5SU1344-1RC32: 32 A, Type AC, 30 mA, C characteristic.
5SU1644-1RC32: 32 A, Type AC, 300 mA, C characteristic.
The main difference is the residual-current sensitivity.
SB Smart supplies Siemens SENTRON/Betagard 5SU1 RCBOs and industrial electrical protection products in India for panel builders, electrical contractors, OEMs, industrial buyers, machine builders and maintenance requirements.
|
Parameter |
Specification |
|
Product Series |
Siemens Betagard 5SU1 |
|
Part Number |
5SU1344-1RC32 |
|
Product Type |
RCBO |
|
Poles |
4P |
|
Rated Current |
32A |
|
Tripping Curve |
C Curve |
|
Residual Current |
30 mA |
|
Residual Type |
AC |
|
Rated Voltage |
415V AC |
|
Breaking Capacity |
10 kA |
|
Mounting Type |
DIN Rail |
|
Function |
Overload + Short circuit + Earth leakage protection |
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