14 products found
Littelfuse, Inc. Products
-
Battery Management
-
Littelfuse - Model 48510 Series - Standard Low Voltage Disconnects Series - 150A to 200 A - Standard LVD
Automatically disconnects non-critical loads from a battery when the battery voltage falls below a predefined threshold. Automatically reconnects the loads to the battery when it is being charged which prolongs battery life by preventing premature damage. No more stranded vehicles! Avoid the time and expense of getting your vehicles towed. The SureStart LVD ensures that there is enough power to start, and saves the batteries on vehicles that aren’t ...
-
DC Solenoids and Relays
-
Littelfuse - Model 24200 Series - Continuous Duty SPST Relays
Relays are commonly referred to as a remote-acting switches and Littelfuse manufacturers a broad range of styles to meet your application. To ensure you are utilizing the proper remote-acting switches, review the attributes in the specifications tab below against your application ...
-
Fusible Switches and Panels
-
Littelfuse - Model LPS Series - Pre-Engineered Shunt Trip POWR-Switch
The Littelfuse® POWR-Switch provides a simple and economical solution for applications that require selective coordination and shunt trip capabilities. Utilizes Class J time-delay fuses that are easily coordinated with other system overcurrent devices. The shunt trip capability allows the POWR-Switch to meet the ANSI/ASME standard that requires power to be automatically disconnected before water is turned on by the fire safety ...
-
Model LCP Series - Pre-Engineered Selective Coordination Panel
The Littelfuse Coordination Panel provides a simple, time-saving solution for circuits that require selective coordination. Emergency Systems (NEC® 700.27), Legally Required Standby Systems (NEC®701.18), and Healthcare Essential Electrical Systems (NEC® 517.26) are required by the NEC® to be selectively coordinated. This UL Listed solution saves time, money and increases safety by minimizing system ...
-
Protection Relay and Control
-
Model SE-601 - DC Ground-Fault Monitor
The SE-601 is a microprocessor-based ground-fault relay for ungrounded dc systems. It provides sensitive ground-fault protection without the problems associated with nuisance tripping. Ground-fault current is sensed using an SE-GRM Series Ground-Reference Module—a resistor network that limits ground-fault current to 25 mA. The SE-601 is used on ungrounded dc systems ranging from industrial 24- Vdc control circuits to 1000-Vdc solar and ...
-
Protection Relays and Controls - Resistance Grounding/NGR Monitoring
-
Littelfuse - Model NGR Series - Us - Neutral Grounding Resistor System
High-resistance grounding prevents many of the problems that are associated with ungrounded and solidly grounded electrical distribution and utilization systems. High-resistance grounding can limit point-of-fault damage, eliminate transient overvoltages, reduce the arc-flash hazards, limit voltage exposure to personnel, and provide adequate tripping levels for selective current-based ground-fault detection and coordination. The Littelfuse Neutral ...
-
Littelfuse - Model NGR Series - Canada - Neutral Grounding Resistor System
High-resistance grounding prevents many of the problems that are associated with ungrounded and solidly grounded electrical distribution and utilization systems. High-resistance grounding can limit point-of-fault damage, eliminate transient overvoltages, reduce the arc-flash hazards, limit voltage exposure to personnel, and provide adequate tripping levels for selective current-based ground-fault detection and coordination. The Littelfuse Neutral ...
-
Littelfuse - Model SE-330 Series - Neutral-Grounding-Resistor Monitor
The SE-330 is an advanced ground-fault and neutral-grounding resistor monitoring relay that is compliant with Rule10-302 of the 2018 Canadian Electrical Code Part I (CE Code). It measures neutral current, neutral-to-ground voltage, and neutral-to-ground resistance. It provides continuous monitoring of the neutral-to-ground path to verify that the neutral-grounding resistor (NGR) is intact and that it has not been bypassed or shorted. An open NGR renders ...
-
Littelfuse - Model SE-330AU Series - Neutral-Earthing-Resistor Monitor
The SE-330AU is an advanced earth-fault and earthing-resistor monitoring relay for low- and medium-voltage transformers and generators. It monitors neutral current, neutral-to-earth voltage, and neutral-to-earth resistance. It provides continuous monitoring of the neutral-to-earth path to verify that the neutral-earthing resistor (NER) is intact. This is of utmost importance—an open NER renders current-sensing earth-fault protection inoperative and ...
-
Littelfuse - Model SE-330HV Series - Neutral-Grounding-Resistor Monitor
he SE-330 is an advanced ground-fault and neutral-grounding-resistor monitoring relay. It measures neutral current, neutral-to-ground voltage, and neutral-to-ground resistance. It provides continuous monitoring of the neutral-to-ground path to verify that the neutral-grounding resistor (NGR) is intact. This is of utmost importance—an open NGR renders current-sensing ground-fault protection inoperative and could result in a false belief that the ...
-
Littelfuse - Model SE-325 Series - Neutral-Grounding-Resistor Monitor
The SE-325 Neutral-Grounding-Resistor Monitor is used on resistance-grounded systems up to 25 kV to monitor the integrity of the neutral-to-ground path and to detect ground faults. It measures current and voltage in a transformer or generator neutral-to-ground connection and continuity of the neutral-grounding resistor (NGR). The SE-325 coordinates these three measurements to detect a loose connection, corrosion, ground fault, or NGR failure, and provides ...
-
Littelfuse - Model NGRM-ENC Series - Neutral-Grounding-Resistor Monitor
The NGRM-ENC is a compact non-metallic NEMA-4X enclosure housing an SE-325 or SE-330 Neutral-Grounding-Resistor (NGR) Monitor pre-wired to terminal blocks for easy field installation. Optional features include a fused 600/480:120 V control power transformer and internal/external 3-phase voltage-indicator lights. For SE-330 models, a USB connector is included and additional options include an analog current meter, pulse-enable switch, and network ...
-
Littelfuse - Model PGR-5330 Series - Neutral-Grounding-Resistor Monitor
The PGR-5330 is an advanced ground-fault and resistor monitoring relay. The PGR-5330 measures neutral current, neutral-to-ground voltage and neutral resistance. It provides continuous monitoring of the neutral-to-ground path to ensure the neutral-grounding resistor (NGR) is intact. This is of utmost importance on resistance-grounded systems because NGR failure renders current-sensing ground-fault protection ...
-
Littelfuse - Model PGM-8325 Series - Neutral-Grounding-Resistor Monitor
The PGM-8325 Neutral Grounding Monitor is used on resistance-grounded systems up to 25 kVac to monitor the integrity of the neutral-to-ground path. It measures current and voltage in a transformer or generator neutral-to-ground connection and continuity of the neutral-grounding resistor (NGR). The PGM-8325 coordinates these three measurements to detect a loose connection, corrosion, ground-fault, or NGR failure, and provides one alarm or trip output ...