Littelfuse 520CP115RX30 - 520CP/R rly.ener.ot RUN/L rly.ener.on. The 520CS and 520CP are fully-programmable, microcontroller-based, current-sensing devices designed to monitor 3-phase pumps. The 520CP is designed to work with motors that have ramp-up times of 4 seconds or less. The 520CS has a programmable motor acceleration time that can be set from 0-50 seconds. Both current monitors protect 3-phase motors from: Overcurrent. Undercurrent. Current Unbalance. Rapid Cycling. Single Phasing. Phase Reversal.
Littelfuse

520CP115RX30

UPC: 079458990805


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Overview

The Littelfuse 520CP115RX30 is a fully-programmable, microcontroller-based current-sensing device engineered to monitor and protect 3-phase pumps. This unit, part of the 520CP series, is specifically designed for motors with rapid ramp-up times of 4 seconds or less. The 520CP115RX30 offers comprehensive protection against critical motor faults including overcurrent, undercurrent, current unbalance, rapid cycling, single phasing, and phase reversal. The 520CP115RX30 ensures operational integrity by continuously analyzing electrical parameters and initiating protective measures when deviations are detected. Its programmability allows for precise customization to match the unique requirements of various motor applications, making it an essential component for industrial settings where motor reliability and safety are paramount. The device's advanced sensing capabilities and robust design provide dependable protection for 3-phase motors in demanding operational environments. Key protective functions include: Overcurrent, Undercurrent, Current Unbalance, Rapid Cycling, Single Phasing, and Phase Reversal. This model is optimized for quick motor start-up sequences, operating with ramp-up times of 4 seconds or less. The 520CP series, which includes the 520CP115RX30, is designed to work with motors that have ramp-up times of 4 seconds or less. Both the 520CS and 520CP current monitors protect 3-phase motors from a range of critical faults. The 520CS, in contrast to the 520CP, has a programmable motor acceleration time that can be set from 0-50 seconds. The 520CP115RX30, as a member of the 520CP family, is built for motors with rapid acceleration characteristics.
  • Monitors and protects 3-phase motors
  • Suitable for motors with ramp-up times of 4 seconds or less
  • Protects against overcurrent, undercurrent, current unbalance, rapid cycling, single phasing, and phase reversal
  • Fully-programmable, microcontroller-based design
  • Ensures reliable motor operation and safety

Specifications

Brand Name
Littelfuse
Operating Temperature
33 to 158
Operating Temperature, Maximum
158
Operating Temperature, Minimum
33
Poles
3-Phase
Series
520CP
Special Features
5YR WARR
Standard
UL/ULC
Sub Brand
Symcom
Voltage Rating
100-130 V
520CP/display NC=no Cur when c=0 4 sec. The 520CS and 520CP are fully-programmable, microcontroller-based, current-sensing devices designed to monitor 3-phase pumps. The 520CP is designed to work with motors that have ramp-up times of 4 seconds or less. The 520CS has a programmable motor acceleration time that can be set from 0-50 seconds. Both current monitors protect 3-phase motors from: Overcurrent. Undercurrent. Current Unbalance. Rapid Cycling. Single Phasing. Phase Reversal.

520CP115RX56

520CP/display NC=no Cur when c=0 4 sec. The 520CS and 520CP are fully-programmable, microcontroller-based, current-sensing devices designed to monitor 3-phase pumps. The 520CP is designed to work with motors that have ramp-up times of 4 seconds or less. The 520CS has a programmable motor acceleration time that can be set from 0-50 seconds. Both current monitors protect 3-phase motors from: Overcurrent. Undercurrent. Current Unbalance. Rapid Cycling. Single Phasing. Phase Reversal.
Three Phase Monitor Relay; DIN-Mount; 190-500V; 10A DPDT; Phase Loss; Reversal; Unbalance; Under/Over Voltage

PMDU

Three Phase Monitor Relay; DIN-Mount; 190-500V; 10A DPDT; Phase Loss; Reversal; Unbalance; Under/Over Voltage
CM-PVE UNDER & OVERVOLT. 3PH.

1SVR550871R9500

CM-PVE UNDER & OVERVOLT. 3PH.
Relay 460V 3 Phase Monitor

18883000015

Relay 460V 3 Phase Monitor

Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.