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Siemens 3NP1123-1BC20

Name: 3NP1123-1BC20
Brand: Siemens
SKU: 3NP1123-1BC20
Price: 41.43 GBP
Availability: InStock

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Marvo Stock ID MV-7A18

HS Code 85362090

SKU 3NP1123-1BC20

Condition Used

Warranty 12 months

Weight (kg) 0.82

Length (mm) 127.60

Width (mm) 88.80

Height (mm) 211.40

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More about this product

Specification & Description

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Commonly Asked Questions

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Customer Reviews

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Specification & Description

Specification	Description
Part Number	3NP1123-1BC20
Alternative Part Number	3NP11231BC20
Manufacturer	Siemens
Product Type	Fuse Switch Disconnector
Rated Operational Current (Ie)	72 A at 400 V AC for capacitor; 160 A for AC-21 B; 160 A for AC-22 B; 160 A for AC-23 B at 400 V
Rated Insulation Voltage (Ui)	690 V
Rated Impulse Withstand Voltage (Uimp)	8 kV
Conditional Short-Circuit Current (Iq)	80 kA at 500 V AC; 120 kA with closed switch at 500 V AC
Degree of Protection	IP20 open; IP30 without cover; IP40 with cover or cable lug cover
Mounting Type	DIN Rail Mount
Mounting Position	Horizontal/Vertical
Busbar Centre-to-Centre Spacing	60 mm
Net Weight	0.82 kg
Ambient Temperature Range	-25 °C to +55 °C during operation; -50 °C to +80 °C during storage
Power Loss	14 W per pole in hot operating state
Dimensions	88.8 x 125.1 x 207 mm
Degree of Pollution	3
Connection System	Box terminal
Connectable Conductor Cross-Section	1.5 mm² to 50 mm² single or multi-stranded; 1.5 mm² to 35 mm² finely stranded with core end processing
Tightening Torque	3.5 N·m minimum; 4 N·m maximum
Mechanical Operating Cycles	2,000 typical
Product Function	Switch disconnector with safety switch and maintenance/repair switch capability

The Siemens 3NP1123-1BC20 is a robust and reliable fuse switch disconnector designed to enhance operational efficiency and safety in industrial power management. This three-pole device is compatible with NH000 size fuse links and is specifically engineered for seamless integration with the 8US busbar system measuring 60 mm. It features a box terminal connection and is crafted to accommodate busbar thicknesses of 5 or 10 mm, offering flexibility for various installation requirements.

With a cover level of 32/70 mm, the 3NP1123-1BC20 ensures a secure and protected environment for electrical components. The unit is built to withstand an operational current of up to 160 A at 35 °C, demonstrating its capacity to handle significant electrical loads. The disconnector is also designed to endure a mechanical service life of approximately 2,000 typical switching cycles, highlighting its durability and long-term reliability.

The device boasts an insulation voltage rated at 690 V, with a surge voltage resistance of 8 kV, ensuring it can perform safely under challenging electrical conditions. It also offers a degree of pollution classification of 3, indicating its capability to operate effectively even in environments with a certain level of contaminants.

For safety and compliance, the 3NP1123-1BC20 is designed with a protection class of IP40 when the switch is closed with a cover or cable lug cover, and IP30 without. This level of protection ensures that the device is safeguarded against ingress of solid objects and provides a degree of touch protection.

The Siemens 3NP1123-1BC20 is a testament to Siemens' commitment to quality, safety, and efficiency in electrical power distribution. Its design and construction make it an essential component for industrial settings requiring reliable and secure power management solutions.

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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Learn more about Marvo

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 type of device is this and what are its main uses?

This device is a fuse switch disconnector, primarily used for ensuring safe operation and disconnection in electrical circuits. It's suitable for use in industrial control, distribution boards, and infrastructure applications.

Can this fuse switch disconnector be mounted on a DIN rail?

Yes, the Siemens 3NP1123-1BC20 is designed for DIN rail mounting, which facilitates easy installation and integration into electrical distribution systems.

What is the rated operational current for this device?

The rated operational current for this fuse switch disconnector is 160 A, making it suitable for handling high current applications.

What is the degree of protection provided by this device?

The device provides an IP20 degree of protection when open, IP30 without a cover or cable lug cover, and IP40 with a cover or cable lug cover.

What are the dimensions of this fuse switch disconnector?

The dimensions of the device are 88.8 mm in width, 211.4 mm in height, and 127.6 mm in depth.

Is this device suitable for both AC and DC applications?

Yes, the fuse switch disconnector is suitable for both AC and DC applications, with specific operational current ratings depending on the voltage and utilization category.

What is the conditional short-circuit current rating for this device?

The conditional short-circuit current rating is 80 kA at 500 V and 690 V with AC and speedy activation, and 120 kA with the switch closed at the same voltages.

Can this device be used with different sizes of busbars?

Yes, it is compatible with a 60 mm busbar system and can accommodate busbar thicknesses of 5 or 10 mm.

What type of terminal connection does this device have?

The device features a box terminal connection for the main current circuit, which allows for secure and reliable connections.

What ambient temperature range can this device operate within?

The device can operate within an ambient temperature range of -25 °C to +55 °C, ensuring reliable performance in various environmental conditions.

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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