Product category:
Electrical and Electronic Components
News Release from: AutomationDirect | Subject: Sirco and Fuserbloc power disconnects
Edited by the Engineeringtalk Editorial
Team on 31 January 2007
Heavy-duty disconnects protect equipment
AutomationDirect has added 600V AC/250V DC heavy-duty fusible and non-fusible disconnects from Ferraz Shawmut to its list of power products.
AutomationDirect has added 600V AC/250V DC heavy-duty fusible and non-fusible disconnects from Ferraz Shawmut to its list of power products Meeting UL98 standards, the Sirco and Fuserbloc series are designed with the latest disconnect technology available, "make and break" power circuits under load, and are UL, CSA, CE and IEC-rated
This article was originally published on Engineeringtalk on 22 Jan 2003 at 8.00am (UK)
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A wide array of handles is available for OSHA padlocking requirements, NEMA configurations, defeater options and NFPA 79 requirements.
The Sirco switches and accessories, starting at US $57, have been tested and approved for use in the most demanding applications, such as "service entrance" and main panel disconnects.
These heavy-duty switches are available in 30-800A ratings; switches up to 400A are equipped with visible blade contacts.
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Enclosures protect electrical equipment
AutomationDirect's disconnect enclosures meet NEMA standards for performance and protection of the electrical equipment installed within them.
The available defeatable pistol handles automatically re-latch when the panel door is closed, eliminating the need for tools to reset the latch.
Fuserbloc fusible disconnects and accessories, starting at US $85, break up to 200A and use double-break contacts per pole, isolating the fuse while the switch is in the off position.
To reduce or eliminate the danger of accidental contact with live, energised parts, these fusible disconnects are supplied with fuse covers and line side shrouding as a standard safety feature.
Used with class CC or J fuses, the Fuserbloc switches provide reliable circuit protection in service entrance or main panel disconnect applications.
Meeting requirements of the NFPA79 standard, these disconnect switches isolate electrical equipment from the supply circuit and have one off and one on position only.
The disconnect switches are designed with a permanent means of being locked in the off position independent of door position, and can be operated independent of the door position without accessory tools or devices.
All disconnect switch contacts work independently of the speed and force of the operator.
Switches up to 400A use silver-tipped contact technology, providing high load break characteristics and longer mechanical and electrical life.
Such features make them maintenance-free and offer an excellent solution for harsh environments.
Switches over 400A use a self-cleaning technology which provides high short-circuit resistance.
Positive opening operation prevents the handle from reaching the off position unless the contacts are truly opened.
This safeguards users in the case of welded contacts due to an overload or short circuit.
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