Types of Circuit Breakers, Surge Protectors & Fuses

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Littelfuse SB4000 Industrial Shock Block
Littelfuse SB4000 Industrial Shock Block
05/26/2026
Available in single-phase, split-phase, three-phase, and 4-wire systems from 208V to 240V voltage.
Littelfuse MXM MEGA® MIDI® Fuse Holders
Littelfuse MXM MEGA® MIDI® Fuse Holders
10/23/2025
High-current solution rated up to 120V/650A, with sliding tabs and interlocking pins.
Littelfuse MCASE® 4-Way Fuse Holders
Littelfuse MCASE® 4-Way Fuse Holders
09/16/2025
Compact, high-performance solutions designed to support up to four MCASE+® slotted cartridge fuses.
Littelfuse FHZS200 Sealed ZCASE® Fuse Holder
Littelfuse FHZS200 Sealed ZCASE® Fuse Holder
12/24/2024
32VDC 400A bolt-down IP69K fuse holder with a versatile and rugged electrical distribution solution.
Littelfuse 520 Series Metric OMNI-BLOK® Fuse Blocks
Littelfuse 520 Series Metric OMNI-BLOK® Fuse Blocks
09/19/2024
Low-profile designs available with a choice of solder-type terminals and NEMA-style QC terminals.
Littelfuse 354 PCB OMNI-BLOK® Molded Base Fuse Block
Littelfuse 354 PCB OMNI-BLOK® Molded Base Fuse Block
08/30/2024
30A current rating, 600VDC/AC voltage rating, and a -40°C to +85°C operating temperature range.
Littelfuse L60QS High-Speed Semiconductor Fuses
Littelfuse L60QS High-Speed Semiconductor Fuses
07/25/2024
Fast-acting design safeguards power semiconductor devices and helps extend product longevity.
Littelfuse ZCASE® BMZS 80V Battery-Mounted Fuse Holders
Littelfuse ZCASE® BMZS 80V Battery-Mounted Fuse Holders
12/20/2023
Offers a forged base with a battery post clamp and pre-installed M10 insulated studs.
Littelfuse 656 & 658 Series Fuse Blocks
Littelfuse 656 & 658 Series Fuse Blocks
08/28/2023
Molded base fuse blocks compatible with 5mm x 20mm fuse sizes.
Littelfuse 150520 In-Line Fuseholders for 5mm × 20mm Fuses
Littelfuse 150520 In-Line Fuseholders for 5mm × 20mm Fuses
05/04/2023
Fuseholders for 5mm x 20mm fuses rated at 600VAC/600VDC with a 20A current rating.
Littelfuse ESR POWR-SPEED® High-Speed Square Body Fuses
Littelfuse ESR POWR-SPEED® High-Speed Square Body Fuses
12/22/2022
1500VDC fuses that are fast-acting to respond quickly to various fault currents.    
Littelfuse HCB Molded Case Circuit Breakers
Littelfuse HCB Molded Case Circuit Breakers
09/27/2022
Feature a 10A to 60A and one-, two-, or three-pole reversible lug line/load connection.
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Bourns PF-000100E/PF-01N100E/PF-1NH100E Fuses
Bourns PF-000100E/PF-01N100E/PF-1NH100E Fuses
06/04/2026
Designed to comply with UL 248-13, IEC 60269-4, and IEC 60269-7 standards.
Littelfuse SB4000 Industrial Shock Block
Littelfuse SB4000 Industrial Shock Block
05/26/2026
Available in single-phase, split-phase, three-phase, and 4-wire systems from 208V to 240V voltage.
Transtector I2R Indoor DIN-Rail DC Surge Protectors (SPDs)
Transtector I2R Indoor DIN-Rail DC Surge Protectors (SPDs)
03/09/2026
Protects critical equipment operating on a 48VDC electrical service.
Transtector ACP AC Surge Protectors (SPDs)
Transtector ACP AC Surge Protectors (SPDs)
03/09/2026
Hard-wired or plug-in AC SPDs that use SASD technology to protect critical equipment.
Transtector ALPU Surge Protector (SPD) Kits & Accessories
Transtector ALPU Surge Protector (SPD) Kits & Accessories
03/09/2026
Mounting kits for ALPU SASD technology SPDs and an ALPU-TSU Replacement PCB Assembly.
Transtector I2R DIN-Rail AC Surge Protectors (SPDs)
Transtector I2R DIN-Rail AC Surge Protectors (SPDs)
03/09/2026
UL1449 4th Ed. DIN-rail devices providing effective protection against electrical transient surges.
Transtector CPX DIN-Rail Mounting Kit
Transtector CPX DIN-Rail Mounting Kit
03/09/2026
Mounting kit for the CPX 4-Port Chassis.
Transtector DR DIN-Rail AC Surge Protectors (SPDs)
Transtector DR DIN-Rail AC Surge Protectors (SPDs)
03/09/2026
DIN-rail devices that use SASD technology to protect critical equipment.
Transtector APEX IMAX Panel-Mount AC Surge Protectors (SPDs)
Transtector APEX IMAX Panel-Mount AC Surge Protectors (SPDs)
03/09/2026
Uses MOV or SASD + MOV hybrid technology to protect critical equipment.
Transtector DC DEFENDER Outdoor Clamshell DC Surge Protectors
Transtector DC DEFENDER Outdoor Clamshell DC Surge Protectors
03/09/2026
Clamshell-style SPDs that protect critical equipment that operates on a 48VDC electrical service.
Phoenix Contact VAL-US-SPP Surge Protection Devices
Phoenix Contact VAL-US-SPP Surge Protection Devices
02/26/2026
Designed to provide surge protection for NEMA supply system configurations.
Schurter EKO High-Performance HV Fuses
Schurter EKO High-Performance HV Fuses
02/24/2026
Features rated voltages of 500VDC or 1000VDC, designed for industrial and energy applications.
Phoenix Contact VAL-SPP Industrial Surge Protectors
Phoenix Contact VAL-SPP Industrial Surge Protectors
02/12/2026
Easy and safe installation with forward-thinking handling and safety features.
PolyPhaser Surge Protector Accessories
PolyPhaser Surge Protector Accessories
01/22/2026
Provide the necessary accessories to complete the grounding installation.
Eaton 14DE High Breaking Capacity Semiconductor Fuses
Eaton 14DE High Breaking Capacity Semiconductor Fuses
01/13/2026
Features a 20kA high breaking capacity for high-energy applications.
Schurter APO 1000V Pyro Fuse
Schurter APO 1000V Pyro Fuse
01/02/2026
Safety device engineered for high-voltage DC applications with high reliability and safety.
E-T-A Circuit Breakers REX22D-T Intelligent Electronic Circuit Protectors
E-T-A Circuit Breakers REX22D-T Intelligent Electronic Circuit Protectors
12/03/2025
Selectively protects all 24VDC load circuits up to 20A.
Phoenix Contact CAPAROC EtherCAT Power Module
Phoenix Contact CAPAROC EtherCAT Power Module
11/07/2025
Offers 12VDC and 24VDC power to breakers installed on the current rail. 
Phoenix Contact FIL-1S/SFP2 EMC Filters
Phoenix Contact FIL-1S/SFP2 EMC Filters
10/28/2025
Meets the needs of equipment users seeking in-line noise filtration circuits.
Littelfuse MXM MEGA® MIDI® Fuse Holders
Littelfuse MXM MEGA® MIDI® Fuse Holders
10/23/2025
High-current solution rated up to 120V/650A, with sliding tabs and interlocking pins.
Littelfuse MCASE® 4-Way Fuse Holders
Littelfuse MCASE® 4-Way Fuse Holders
09/16/2025
Compact, high-performance solutions designed to support up to four MCASE+® slotted cartridge fuses.
Tripp Lite Industrial-Grade IT Solutions
Tripp Lite Industrial-Grade IT Solutions
08/07/2025
Purpose-built to power, protect, and connect IT equipment in harsh environments.
Eaton PDG Power Defense Molded Case Circuit Breakers
Eaton PDG Power Defense Molded Case Circuit Breakers
07/22/2025
Deliver predictive diagnostics that help uncover, diagnose, and stop power outages.
TE Connectivity W52 Rocker-Actuated Circuit Breakers
TE Connectivity W52 Rocker-Actuated Circuit Breakers
06/23/2025
Trip-free cycling, 0.5A to 20A ratings, and snap-in panel-mount design that simplifies installation.
Bourns PF-PVC150R Photovoltaic (gPV) Power Fuses
Bourns PF-PVC150R Photovoltaic (gPV) Power Fuses
06/17/2025
Designed to comply with UL 248-10 (Class gPV) photovoltaic fuse standard.
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