Siemens Fuse Switch Disconnector, 3 Pole, 250A Max Current, 250A Fuse Current

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£139.97

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£167.96

(inc. VAT)

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RS Stock No.:
216-5961
Mfr. Part No.:
3NP1143-1DA10
Brand:
Siemens
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Brand

Siemens

Number of Poles

3

Maximum Current

250A

Fuse Current Rating

250A

Enclosed/Not Enclosed

Not-enclosed

Range

SENTRON

Series

3NP1

Mechanical Fuse Size

NH0, NH1

Throw Configuration

3P

Auxiliary Contacts Available

No

Terminal Type

Screw

Voltage Rating

690V

Maximum Operating Temperature

+55°C

Minimum Operating Temperature

-25°C

COO (Country of Origin):
CZ

Siemens 3NP1 Series Fuse Switch Disconnector, Floor Mount, Screw Terminal - 3NP1143-1DA10


This fuse switch disconnector provides effective electrical isolation and protection for industrial applications. Its 3-pole design and robust construction support high performance, making it essential for automation and electrical distribution systems. With a maximum current rating of 250A, it ensures safety and efficiency across various environments.

Features & Benefits


• Designed for floor mounting, streamlining installation
• Accommodates NH0 and NH1 fuse sizes for flexible usage
• Suitable for voltages up to 690V, enhancing adaptability
• Maximum let-through current of 32kA protects downstream equipment
• Supports connections for conductors up to 150mm² for broad compatibility

Applications


• Facilitates effective load disconnection in electrical panels
• Utilised for safe isolation during maintenance and repair work
• Acts as a key safety switch in automated systems

What is the maximum number of operating cycles before maintenance is needed?


The typical mechanical service life is approximately 1,600 operating cycles, ensuring longevity under normal conditions.

What is the recommended tightening torque for the terminals?


The tightening torque for screw-type terminals should be between 10N·m and 12N·m to ensure optimal connection without risk of damage.

How does it perform under high ambient temperatures?


It operates efficiently at a maximum temperature of 55°C, making it suitable for warmer environments without compromising performance.

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