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Siemens 5SY7120-7

Name: 5SY7120-7
Brand: Siemens
SKU: 5SY7120-7
Price: 31.7 GBP
Availability: InStock

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£31.70 (ex. VAT)

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Marvo Stock ID MV-7RGT

HS Code 85362010

SKU 5SY7120-7

Condition New sealed

Warranty 12 months

Weight (kg) 0.16

Length (mm) 76.00

Width (mm) 18.00

Height (mm) 90.00

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Specification & Description

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Commonly Asked Questions

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Specification & Description

Specification	Description
Part Number	5SY7120-7
Alternative Part Number	5SY71207
Manufacturer	Siemens
Type	Miniature circuit breaker
Number of Poles	1
Tripping Characteristic Class	C
Rated Current (AC)	20 A
Rated Voltage (AC)	230/400 V
Rated Voltage (DC)	Maximum 72 V
Rated Breaking Capacity (AC)	15 kA according to EN 60898 / 25 kA according to IEC 60947-2
Rated Breaking Capacity (DC)	15 kA according to IEC 60947-2
Energy Limiting Class	3
Mechanical Service Life	Typical 20,000 switching cycles
Overvoltage Category	III
Degree of Pollution	3
Insulation Voltage	440 V with multi-phase operation (AC rated value)
Protection Class IP	IP20 with connected conductors
Ambient Temperature Range	-25 °C to +55 °C during operation, -40 °C to +75 °C during storage
Mounting Type	Quick assembly system
Mounting Position	Any
Width	18 mm
Height	90 mm
Depth	76 mm
Installation Depth	70 mm
Net Weight	161 g
Product Features	Halogen-free, sealable, silicon-free, touch protection, properties for main switches in accordance with EN 60204-1
Connectable Conductor Cross-Section	Solid: 0.75 mm² to 35 mm², Stranded: 0.75 mm² to 35 mm², Finely stranded with wire end processing: 0.75 mm² to 25 mm²
Tightening Torque	2.5 N·m to 3 N·m (with screw-type terminals)

The Siemens 5SY7120-7 is a robust miniature circuit breaker designed to provide reliable overcurrent protection in a variety of applications. Engineered for quick assembly, this 1-pole circuit breaker features a C tripping characteristic, ensuring a precise response to overcurrent conditions, making it suitable for use in both commercial and industrial environments.

With a rated operational voltage of 230/400V and a rated current of 20A, the 5SY7120-7 is capable of handling a diverse range of electrical loads. Its impressive breaking capacity of 15kA according to IEC 60947-2 and EN 60898 standards, along with a 25kA breaking capacity as per IEC 60947-2, highlights its ability to safely interrupt fault currents and protect downstream equipment.

The compact design, with a width of only 18mm per pole, allows for efficient use of space within electrical distribution boards. The device's mechanical service life is rated at 20,000 cycles, indicating its durability and long-term reliability. Additionally, the circuit breaker is designed to be sealable, halogen-free, and silicon-free, which contributes to its overall safety and environmental friendliness.

The 5SY7120-7 also features a quick assembly system for ease of installation and can be mounted in any position, providing flexibility in various installation scenarios. Its ambient operating temperature range of -25°C to +55°C ensures consistent performance across a wide range of environmental conditions.

Overall, the Siemens 5SY7120-7 miniature circuit breaker is a high-quality protective device that offers a combination of performance, safety, and ease of use, making it an excellent choice for safeguarding electrical circuits in a multitude of settings.

Commonly Asked Questions

Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.

What payment methods do you accept?

We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.

Is Marvo a credible parts supplier?

Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

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Creating an account is incredibly simple and takes a matter of seconds. You can create a Marvo account at any time by clicking here and following the simple steps on screen. By creating a Marvo account you can store your contact details, delivery addresses, billing addresses and more, meaning that you can enjoy game-changing convenience faster than ever before.

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Our service to you

Lightning-Fast Express Shipping: Receive your order in record time with our express shipping options, ensuring you minimize downtime and keep your projects on track.

No-Risk Returns, Guaranteed: Return your parts anytime for a full refund. Our hassle-free return policy ensures you’re never stuck with something you don’t need.

Clear Pricing with No Hidden Fees: What you see is what you pay, transparent pricing with no extra costs, ever. Rest assured, all taxes and fees are already included in your final price.

Rock-Solid Reliability at a Fraction of the Cost: Get pre-owned electronic parts that are fully tested for peak performance, saving you money without compromising on quality, backed by a comprehensive warranty.

Frequently Asked Questions

What is the tripping characteristic class of this circuit breaker?

The tripping characteristic class of this miniature circuit breaker is Class C, which means it is designed to trip quickly to protect circuits from overloads and short circuits.

Can this circuit breaker be used in both AC and DC applications?

Yes, this miniature circuit breaker is suitable for both AC and DC applications, providing versatility in its use across different electrical systems.

What is the rated operational voltage for this device?

The rated operational voltage for this device is 230V for single-phase operation and 400V for multi-phase operation with AC current.

What is the rated switching capacity current for this circuit breaker?

The rated switching capacity current for this circuit breaker is 15kA according to IEC 60947-2 and EN 60898 standards.

What is the mechanical service life of this circuit breaker?

The mechanical service life of this circuit breaker is typically around 20,000 switching cycles, indicating its durability and reliability over time.

Is this circuit breaker halogen-free?

Yes, this circuit breaker is halogen-free, making it an environmentally friendly choice for electrical installations.

What is the energy limiting class of this circuit breaker?

The energy limiting class of this circuit breaker is Class 3, which refers to its ability to limit the let-through energy in the event of a fault.

Can supplementary devices be installed with this circuit breaker?

Yes, supplementary devices can be installed with this circuit breaker, allowing for additional functionality and customisation according to specific requirements.

What is the insulation voltage rating for this device?

The insulation voltage rating for this device is 440V for both single-phase and multi-phase operation at AC.

What are the environmental operating conditions for this circuit breaker?

This circuit breaker can operate in ambient temperatures ranging from -25°C to +55°C and can be stored in temperatures ranging from -40°C to +75°C.

Part conditions explained

We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:

New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

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