$0.00

Checkout ►

Direct Sales in US and Canada | 1-800-633-0405

MY ORDERS |

PRODUCT RETURNS |

INVOICES |

QUOTES |

ABOUT US

FREE 2-Day Shipping $49 and over

Home |

Products |

Support

Account |

Chat

Javascript is not enabled on your browser. Javascript is required for many of our site's features to work properly.
Please enable javascript in your browser preferences to continue.

Attention Hubbell-Wiegmann Enclosure Customers: The order deadline for same-day shipment of LTL (freight) orders direct-shipped from Hubbell-Wiegmann in Freeburg, IL has temporarily changed to 3:00 pm ET.
The order deadline for same-day shipment of all other direct-shipped products, including small parcel orders from Hubbell-Wiegmann, will remain at 4:00 pm ET. We appreciate your patience as we work with our vendors to get this freight shipped order deadline restored to its original time.

Our offices will be closed on Friday, April 19th in observance of Easter
FedEx shipped orders placed before 6:00PM ET on Thursday, April 18th will ship same day (if paid by Credit Card or PO with account in good standing). Orders placed after the Thursday cutoff will ship Monday, April 22nd, based on product availability. See our Business Policies for earlier shipping cutoff times on drop-shipped items and shipping by other carriers.
Note: Due to Friday holiday, we will not be able to ship next day orders for Saturday or Monday delivery.

Shopping Categories

Learn More

In Depth Product Sites

Product Selectors &
Configuration Utilities

Circuit Protection / Fuses / Disconnects

Circuit Protection / Fuses / Disconnects

Circuit protection is a critical part of any industrial or commercial installation, to meet national codes and protect equipment and processes from excess energy that could cause damage or safety issues. An extensive selection of circuit breakers, supplementary protectors, fuses and holders, and disconnect switches is available, many complying with UL 98, UL 508, UL 489, and UL 1008 standards.

UL 489 Miniature Circuit Breakers

UL 489 Rated Molded Case Circuit Breakers (MCCB)

UL 1077 Rated Supplementary Protectors

Fuses & Fuse Holders

UL 1008 Rated Manual Transfer Switches

Disconnect Switches

UL 508 Rated Manual Motor Controllers (Suitable As Disconnect)

Circuit Breakers, Fuses, and Disconnect Switches

Whether you prefer circuit breakers, fuses, disconnect switches or other types of short circuit protection, AutomationDirect carries a full selection of industrial circuit protector devices at incredible prices.

UL 489 Rated Miniature Circuit Breakers

UL 489 Rated Molded Case Circuit Breakers (MCCBs)

UL 1077 Rated Supplementary Protector Breakers

Industrial Electrical Fuses, Fuse Holders & Fuse Blocks

UL 1008 Rated Manual Transfer Switches

UL 98 & UL 508 Rated Disconnect Switches - Fusible / Non-Fusible

UL 508 Rated Manual Motor Controllers (Suitable As Motor Disconnects)

Circuit Protection Guide

UL 489 or UL 1077?

Circuit Protectors - circuit breakers, fuses, mccb, supplementary protector breakers

Circuit Protection Products

[Learn More]	UL 489 Rated Miniature Circuit Breakers - FAZ-NA Series Eaton FAZ-NA miniature circuit breakers offer optimum and efficient protection for feeder, branch and control circuits up to 40 amps. Available with UL 489 C or D trip Circuit breakers are current limiting - interrupts fault currents within 1/2 cycle DIN-rail mount; branch and feeder circuit applications Field mountable accessories are available	[Learn More]	UL 489 Rated Molded Case Circuit Breakers (MCCBs) - Fuji Electric Fuji Molded Case Circuit Breakers are more compact than other breakers so control panels take up less space. Conforms to all Worldwide standards, including UL / cULus / IEC / CE Marking / JIS / CCC . Suitable for feeder and branch circuits 5 Frame sizes, rated current of 15 to 800A, Max 600V Standard and high-interrupting capacities are available in identically sized breakers Shunt Trip, Undervoltage Release and other accessories are available

[Learn More]	UL 489 Rated Molded Case Circuit Breakers (MCCBs) MCCBs provide UL 489 listed performance for branch circuit overcurrent protection and disconnecting means. Small MCCB size saves panel space Patented contact conductor design featuring high-speed "blow-open" action Advanced arc extinguishing technology Three position toggle handle (on/ off/ tripped) Accessories - handles, auxiliary contacts, shunt trips and undervoltage releases 4 Frame sizes, rated current of 15A to 600A	[Learn More]	UL 1077 Rated Terminal Block Supplementary Protectors (EURO Series) DN-FE series terminal block sockets accept separately available circuit disconnects or supplementary protectors. EURO series mini single-pole UL 1077 supplementary protector breakers (DN-SUPP-xx), UL, CSA and VDE agency approvals Disconnect Blade (DN-DIS-BLADE) The DN-FE blocks are available either with or without a trip indicating LED.

[Learn More]	UL 1077 Rated Supplementary Protector Breakers - FAZ Series Eaton Corp. FAZ series supplementary protector breakers provide overcurrent protection where branch protection is already provided or not required. Ideal replacement for supplementary protector fuses UL 1077 and CSA 22.2 recognized CE marked in accordance with Low Voltage Directive CE LVD 2006/95/EC Single, double and triple pole models B curve, C curve and D curve protection Terminal block circuit protection models	[Learn More]	Electrical Fuses, Fuse Holders and Fuse Blocks The Edison line of fuse products includes a wide variety of electrical fuses and accessories. Edison Fuse is a subsidiary of Cooper Industries, the worldwide leader in circuit protection. High speed Class J drive fuses Extremely fast acting Class T current limiting fuses Current limiting: Class CC, J, RK General purpose: Class M Midget and Small Dimension Slow blow fuses: Time delay fuses Electronic fuses

[Learn More]	*New! ...* UL 1008 Rated Manual Transfer Switches Socomec SIRCOVER switches are heavy duty manual transfer switches rated UL 1008, that ensure safe disconnection of load or transfer of sources under load. Compact design 2-, 3-, 4-poles 100A, 260A, 400A ratings 240VAC and 600VAC max operation voltage (not to be used as a motor disconnect)	[Learn More]	Disconnect Switches Socomec UL 98 Fusible Socomec UL 489 Fusible Gladiator UL 98 Fusible Gladiator UL 508 Fusible Socomec UL 98 Non-Fusible Socomec Enclosed UL 508 Non-Fusible Socomec UL 508 Non-Fusible UL 508 Non-Fusible

[Learn More]	UL 508 Rated Manual Motor Controllers (Suitable As Disconnects) Bryant has designed compact motor controllers that will also meet the rigorous demands of a motor disconnect. Bryant’s electric motor controllers are listed as "Suitable as Motor Disconnect" under UL Standard 508 � Industrial Control Equipment. Manual Motor Controllers/ Motor Disconnects Enclosed Manual Motor Controllers/ Motor Disconnects