LS7R0250 LITTELFUSE | Alldatasheet

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Technical content

Littelfuse.com/DcDisconnectSwitch © 2021 Littelfuse, Inc. Rev: 041122 1 of 2 Dc Disconnect Switch LS7R0250

1500 V Dc • 250 A

Description

The Littelfuse LS7R dc series is an energy-efficient, compact disconnect switch that quickly breaks or resumes the flow of current safely to prevent shock hazards when trying to isolate circuits or repair systems. It is a 1500 V dc disconnect for ungrounded systems. Features/Benefits The patented operation system minimizes damage caused by arcs upon disconnection to increase product reliability and longevity Streamline design eliminates the need for external bridging links (jumpers) to lower heat dissipation for increased energy efficiency, decreased installation and maintenance time, and reduced footprint for added design flexibility High-level disconnection insulation provides a barrier to stop conduction when switch is in off position for added safety The self-cleaning blade contacts eliminate performance degradation (from increased electrical resistance over time) to ensure consistent behavior across the product’s lifespan The internally-located "sandwich-type" 2-contact symmetrical design mitigates the electromagnetic force of repulsion to offer enhanced functionality in short- circuit conditions Meets UL 94 flammability requirements with self- extinguishing/non-flammable materials to prevent fires

Applications

Solar/PV systems: combiner boxes, recombiner boxes and inverters Energy storage systems: disconnection of batteries, containerized batteries Oil & gas: dc drives Railway: earthing switches and battery disconnection UPS: switching and isolation of batteries Electrical vehicle chargers Specifications UL 98B Standards Total Voltage Rating 1500 V dc Amperage Rating 250 A SCCR Rating 10 kA Ambient Temperature -20 to 50 °C (-4 to 122 °F) IEC 60947-3 Standards Insulation Voltage Rating Ui 1500 V dc Impulse Withstand Voltage Rating Uimp 12 kV Operational Current DC21B Rating 250 A / 1500 V dc Other Characteristics Power Losses at 250 A 8.26 watts Maximum Busbar Connection Range 1 bar x 5 mm (.20”) H x 32 mm (1.25”) L Number of Circuits/Switches 1 Tightening Torque 159 lbf-in (18 N•m) Material Plastic housing Silver-plated copper terminals Base Mounting Screws Flammability Rating UL 94 V-0 Approvals UL 98B & UL 94 UL Guide WHVA UL Listed E511898 NEC Article 690 for PV systems IEC-60947-3 CE EAC Environmental RoHS compliant REACH Country of Origin Spain Recommended Accessories Panel Handle with Shaft LDSSA11 For closed panel door access Direct Handle LDSSI11 For open panel door access Auxiliary Contact LDMAU11 Remotely indicates switch position Spacers LDMEL11 Increase distance between switch and mounting plate REACH

Littelfuse.com/DcDisconnectSwitch © 2021 Littelfuse, Inc. Rev: 041122 2 of 2 Dc Disconnect Switch LS7R0250 190 [7.48"] 150 [5.90"] 115 [4.53"] 150 [5.91"] 212 [8.35"] 95 [3.74"] 188 [7.40"] 130 [5.12"] 158.3 [6.23"] 198.3 [7.81"] 210 [8.27"] 170 [6.69"] 170 [6.69"] 10.5 [4.13"] ØM10 M M M* Busbar 28.5 [1.12"] MAX 166 [6.53"] MIN 13 [0.51"] 4 [0.16"] 190 [7.48"] 150 [5.90"] 115 [4.53"] 150 [5.91"] 212 [8.35"] 95 [3.74"] 188 [7.40"] 130 [5.12"] 158.3 [6.23"] 198.3 [7.81"] 210 [8.27"] 170 [6.69"] 170 [6.69"] 10.5 [4.13"] ØM10 M M M* Busbar 28.5 [1.12"] MAX 166 [6.53"] MIN 13 [0.51"] 4 [0.16"] 190 [7.48"] 150 [5.90"] 115 [4.53"] 150 [5.91"] 212 [8.35"] 95 [3.74"] 188 [7.40"] 130 [5.12"] 158.3 [6.23"] 198.3 [7.81"] 210 [8.27"] 170 [6.69"] 170 [6.69"] 10.5 [4.13"] ØM10 M M M* Busbar 28.5 [1.12"] MAX 166 [6.53"] MIN 13 [0.51"] 4 [0.16"] Part Numbering System 00LS2P0250LS7R Configuration Type Amperage Terminal Measurement Series UL product

Ordering Information

PART NUMBER VOLTAGE AMPERAGE INSTALLATION CONFIGURATION SINGLE UNIT WEIGHT LS7R02502PS00L 1500 V dc 250 A Ungrounded Type 2P 3 kg Dimensions Millimeters (Inches) Dc Disconnect Switch Switch - Side View Panel Handle with Shaft LDSSA11 BusbarSwitch - 3D Installation View QTY COPPER BUSBAR M (TERMINAL TORQUE) (+5 % | -10 %) COPPER BUSBAR H MAX (CU) COPPER BUSBAR L MAX (CU) N•M LBF•INCH MM INCH MM INCH

1 M10 18 159 5 13/64 32 1 1/4

ACCORDING TO UL 98BM M (+5 % | -10 %) N•M LBF•INCH * T20 M4 1.2 10.6 — M4 1.5 13.3 * Allen M5 1.5 13.3 Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for 190 [7.48"] 150 [5.90"] 115 [4.53"] 150 [5.91"] 212 [8.35"] 95 [3.74"] 188 [7.40"] 130 [5.12"] 158.3 [6.23"] 198.3 [7.81"] 210 [8.27"] 170 [6.69"] 170 [6.69"] 10.5 [4.13"] ØM10 M M M* Busbar 28.5 [1.12"] MAX 166 [6.53"] MIN 13 [0.51"] 4 [0.16"]