Littelfuse MPS-CTU-03-00 - MPS CONTROL UNIT PROFIBUS. The MPS Motor Protection System monitors voltage, current, and temperature to provide a comprehensive package of 22 protective functions. The MPS is a modular system with integrated protection, motor control, metering, and data-logging functions. This system is typically used to provide protection for three-phase low- and medium-voltage, medium-to high-horsepower induction motors.
Littelfuse

MPS-CTU-03-00

UPC: 079458978032

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Overview

The Littelfuse MPS-CTU-03-00 Profibus Control Unit is a critical component of the MPS Motor Protection System, delivering comprehensive motor protection, control, metering, and data-logging for three-phase low- and medium-voltage induction motors. This modular control unit integrates 22 protective functions, including overcurrent, undervoltage, overvoltage, phase imbalance, ground fault, and thermal overload detection, ensuring maximum uptime and operational efficiency in demanding industrial environments. Designed for seamless integration into existing Profibus communication networks, the MPS-CTU-03-00 provides real-time monitoring of voltage, current, and temperature with true RMS and DFT measurements, peak detection, and positive/negative sequence analysis. The unit supports 5-A or 1-A secondary phase current transformers, up to 600V phase voltage inputs without potential transformers, and sensitive earth-leakage detection via 5-A or 1-A secondary or zero-sequence transformers. Additional inputs include 8 digital inputs, 1 analog input/output, a tachometer for high-speed pulse monitoring, and an IRIG-B time-code input for precise synchronization. The MPS-CTU-03-00 features 5 relay outputs, 24V DC supply for connected modules (e.g., MPS-OPI operator interface, MPS-RTD temperature input module), and RS-485 network communications as standard, with optional Profibus connectivity. The unit is 1/2 DIN size, surface-mountable, and conformally coated for durability in harsh industrial conditions. Certified to CSA, UL, and RCM standards, it is ideal for protecting medium-to-high-horsepower motors in manufacturing, water/wastewater treatment, oil/gas, mining, and power generation sectors. Key applications include safeguarding critical assets in processing plants, ensuring compliance with safety standards in hazardous locations, and enabling remote monitoring via Profibus networks. The MPS-CTU-03-00 is a trusted solution for engineers prioritizing reliability, modularity, and advanced motor protection in industrial automation systems.
  • 22 protective functions including overcurrent, undervoltage, and thermal overload
  • Profibus communication for seamless industrial network integration
  • Supports 5-A/1-A phase current, 600V phase voltage, and sensitive earth-leakage detection
  • 8 digital inputs, 5 relay outputs, 1 analog I/O, and tachometer input
  • 1/2 DIN size, surface-mountable, conformally coated for harsh environments

Specifications

Application
NA
Brand Name
Littelfuse
Connection Type
Screw Terminal / Plug-in
Current Rating
5 A or 1 A
Mounting Type
Surface-mountable
Series
MPS
Size
1/2 DIN
Special Features
Monitors voltage, current, and temperature
Standard
CSA
Sub Brand
MPS Series
Type
Motor Protection
Voltage Rating
600 V

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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.