CIRCUIT PROTECTION
Whether you prefer circuit breakers, fuses, or other types of short circuit protection, AutomationDirect carries a full selection of devices at incredible prices.
- Molded Case Circuit Breakers
- Supplementary Protector Breakers
- Fuses, Fuse Holders & Fuse Blocks
- UL 508 Non-Fused Panel Disconnect Switches
- UL 98 Fusible & Non-Fusible Disconnect Switches
Circuit Protection Guide (674 KB)
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Molded Case Circuit Breakers (MCCBs)
AutomationDirect MCCBs (made by Eaton Electric Inc., manufacturer of Cutler-Hammer products) provide UL489 listed performance
for branch circuit overcurrent protection and disconnecting means.
- Small size of MCCBs saves panel space
- Patented contact conductor design featuring high-speed "blow-open" action
- Advanced arc extinguishing technology
- Toggle handle that provides three positions (on/ off/ tripped)
- Visual handle position indicators
- Accessories - handles, auxiliary contacts, shunt trips and undervoltage releases
- New! ... G-Frame (70 to 90A) and F-Frame (60 to 90A) breakers plus additional shaft lengths and NEMA 4/4X ratings for handles
These parts are available for sale in North America only.
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Supplementary Protector Breakers
The Cutler-Hammer™ WMS series Supplementary Protector breakers from Eaton Corporation are used to provide overcurrent protection where branch protection
(for example, UL 489 MCCB) is already provided or not required.
- Ideal replacement for fuses that are applied as a supplementary protector
- Recognized by UL and CSA under UL 1077 and CSA 22.2
- Marked in accordance with Low Voltage Directive (LVD) (73/ 23/ EEC)
- New! ... C Curve supplementary protectors in addition to B and D Curve
Cutler-Hammer breakers and parts are available for sale in North America only.
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UL98 Rated Fusible & Non-Fusible Disconnect Switches
The AutomationDirect circuit protection products line now includes 600 VAC / 250 VDC heavy-duty fusible and non-fusible disconnects
from Ferraz Shawmut. The series is designed with the most up-to-date power disconnect technology available - "make and break" power circuits on load.
- SIRCO Series: Non-Fusible disconnects
- FUSERBLOC Series: Fusible disconnects
- Meet UL98 standards and are UL, CSA, CE and IEC rated
- Handles are available to meet OSHA padlocking requirements, NEMA configurations, defeater options and NFPA 79 requirements
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UL508 Non-Fusible Load Disconnect Switches
The SD series of modular disconnect switches is used for breaking and disconnecting on low voltage equipment loads at nominal current from 16 to 125 Amps.
These power disconnects are 35 mm DIN rail mountable or screw mountable and come with a wide range of accessories.
- SD1 series - allow breaking and disconnecting on low voltage equipment loads at a nominal current range from 16 Amps to 40 Amps
- SD2 series - allow breaking and disconnecting on low voltage equipment loads at a nominal current range from 63 Amps to 125 Amps
- Most commonly used for Main switch, Switch for motors, Safety switch, and other disconnect applications
- UL 508 rated
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Fuses, Fuse Holders and Fuse Blocks
AutomationDirect offers the Edison line of fuse products which includes a
wide variety of fuses and accessories. Edison Fuse is a subsidiary of Cooper Industries, the worldwide leader in circuit protection.
Edison fuses are available in two classes and feature:
- Current Limiting: Class CC, J, RK
- General Purpose: Class M Midget and Small Dimension
- Direct replacements for other name-brand fuses such as Littelfuse, Siemens, and many more
- DIN rail mount fuse holders feature multiple-pole configurations, finger-safe protection, and are UL 94V-0 rated.
- Panel-mount fuse blocks are a pressure plate type with quick disconnect
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NOTE: For further details or specifications, select the desired product category, and then select the
"Products" tab and click on the desired "Item Code" link, or select the "Technical Info" tab.
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