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Home > Circuit Protection

Circuit Protection

Circuit Protection Equipment | Circuit Breakers for Sale

MCB and MCCB Circuit Breakers

ASI molded case circuit breakers, MCCB, are available in 100, 150,250, 400, 600, 800 and 1200 Amp frame sizes, 2 and 3 pole configurations.

Molded Case
Circuit Breakers

Order the DIN Rail MCB Circuit Breakers from ASI. You will have a complete line of DIN Miniature circuit breakers for your application and save up to 50%.

DIN Rail

Browse DC circuit protection & buy DC breakers online. Our DC industrial circuit breakers are available in 1 or 2 pole forms with standard B or C trip curves.

DC Circuit
When looking at DIN Rail mounted ground fault circuit breakers for your industrial equipment, you want quality. Choosing a ground fault breaker from ASI is the first step! Our ground fault circuit breakers provide unparalleled ground fault protection at an affordable price.

Ground Fault

Panel Mount Circuit Breakers

The hydraulic magnetic circuit breakers offer a broad range for panel and rack mounting applications. Browse through our selection of circuit breakers!

Panel Mount
The hydraulic magnetic circuit breakers offer a broad range for panel and rack mounting applications. Browse through our selection of circuit breakers!

Rack Mount

Fuse Holders

ASI offers Midget, Class CC and Solar Fuse Holders and Blocks which mount on DIN rail, available in 1, 2 & 3 poles, with & without blown fuse indication.

Midget & Class CC
Purchase terminal fuse blocks and DIN rail blade fuse holders today! ASI inventory includes screw clamps, class cc holders, spring clamp types and more.

Terminal Block
Order your PCB fuse holders online at ASI. Keep your fingers safe with the ASI Printed Circuit Board Fuse Holders and stop using those unsafe fuse clips.

PCB Mount
Shop now and purchase glass fuse holders online from ASI! Featuring twist lock housing, these inline fuse holders are for 5x20mm and 6.3x32mm glass fuses.

Order with ASI and get touch safe and cost-effective solutions for Panel Mount Fuse Holders! These feature screw cap or bayonet covers for 5x20mm glass fuses.

Panel Mount

Surge Protection

Looking for surge protector devices and industrial surge protectors? Shop online with ASI and protect your equipment from over-voltages and spikes!

Surge Protection

Terminal Blocks

A wide range of components to easily tailor the circuits being connected with these terminal blocks to your needs

Terminal Block
Circuit Protectors

The range of circuit protection products from ASI is one of the broadest in the industry, including fuse holder terminal blocks, MCCB or Molded Case Circuit Breakers, MCB or miniature circuit breakers that DIN rail mount, panel and rack mounted circuit breakers and GFI or ground fault circuit breakers.

We also offer a wide range of terminal blocks equipped with blocking diodes, MOV's and gas tubes. A complete offering of surge protection modules, which are used to protect against damage from lightning generated transient voltages in power and in control circuits, are now available. With the emergence and growth of the solar industry and others that operate with DC voltages we offer a wide selection of DC circuit breakers and fuse blocks for the types of circuits found in inverters and stringer boxes.

For printed circuit boards ASI has eliminated the hazards and high costs associated with the use of the open metal fuse clips that hold glass type fuses. ASI PCB fuse clips and holders are completely insulated, the cover serving as a safe and convenient method for removing the fuse. Similar types of fuse holders are also available for use in panel mount applications, as well as in-line wired circuit fuse holders.Browse our circuit protection equipment and shop our circuit breakers for sale!

View Associated Products Below to Complete Your Project (Test)

Customers who bought ASI DIN Rail Circuit Breakers Also Saved Time and Money with:

Terminal BlocksSturdy and reliable. ASI offers a complete line of DIN rail Terminal blocks. From single level feed through to high current, find the terminal block for your application.
Switch DisconnectsAvailable in 30 to 100 amp ratings. Panel mount disconnects, face mount disconnects and housing mounted disconnects available.
AC Power OutletsAdd an outlet or GFI protection to any piece of equipment or panel. It's easy. It's fast. It's inexpensive.
Power Distribution Terminal BlocksAvailable in 24, 32 and 41 amp versions. A flexible way to handle power distribution on your DIN Rail.
DIN RailASI DIN rail, all popular sizes available, at very competitive prices
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Automation Systems Interconnect, Inc.
4700 Westport Drive, Suite 500 | Mechanicsburg, PA 17055
REMIT-TO: P.O. Box 1340 | Mechanicsburg, PA 17055
Toll-Free: 877-650-5160 | 717-249-5581 | 717-249-5542 Fax |

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