Littelfuse 201-200-SP - The 201-xxx-SP is an 8-pin octal-base, plug-in voltage monitor designed to protect single-phase motors regardless of size. The 201-100-SP is used on 95-120VAC, 50/60Hz motors to prevent damage caused by low voltage. The 201-200-SP is used on 190-240VAC, 50/60Hz motors. The 201-200-SP-T-9 is a pin-for-pin replacement for a Time Mark; #260 Series voltage monitor. High voltage protection is included in the 201-200-SP-T-9. The unique microcontroller-based voltage and voltage-sensing circuit constantly monitors the voltage to detect harmful power line conditions. When a harmful condition is detected, the relay’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level and a specified amount of time has elapsed (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.
Littelfuse

201-200-SP

Alternate Item Number: 201-200-SP

UPC: 079458990164


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Overview

Protect your single-phase motors with the Littelfuse 201-200-SP, an 8-pin octal-base, plug-in voltage monitor specifically designed for 190-240VAC, 50/60Hz applications. This robust device safeguards motors of any size from damaging power line fluctuations, particularly low voltage conditions. Its core functionality is driven by a proprietary microcontroller-based voltage and voltage-sensing circuit that provides constant monitoring. This advanced system actively detects harmful power line conditions, even before a motor starts, ensuring proactive protection. When an anomaly is detected, the 201-200-SP deactivates its output relay after a fixed 4-second trip delay. This delay is crucial for preventing nuisance tripping caused by rapidly fluctuating power conditions, ensuring stable operation. Once power line conditions stabilize and return to acceptable levels, the output relay reactivates after a specified restart delay, minimizing downtime. Key features include advanced LED indication for diagnostics, facilitating troubleshooting and providing clear status updates. The compact 8-pin design offers flexibility for both DIN rail and surface mounting, simplifying panel installations. The 201-200-SP-T-9 variant is a direct, pin-for-pin replacement for the Time Mark #260 Series voltage monitor and includes the added benefit of high voltage protection. For optimal performance and UL rating, the Littelfuse OT08PC 8-pin Octal Socket is required. This socket is rated for 10A @ 600VAC and supports both surface and DIN rail mounting. The manufacturer recommends a screw terminal torque of 12 in.-lbs for the socket. Ensure the longevity and reliable operation of your single-phase motors with the Littelfuse 201-200-SP voltage monitor. SKU: 201-200-SP. Country of Origin: US. UNSPSC Code: 39122331.
  • Protects single-phase motors (190-240VAC, 50/60Hz) from voltage fluctuations
  • Microcontroller-based circuitry for constant voltage monitoring
  • Fixed 4-second trip delay prevents nuisance tripping
  • Advanced LED indication for diagnostics and status
  • Compact 8-pin octal-base design for flexible mounting

Specifications

Brand Name
Littelfuse
Connection Type
Plug-in
Frequency
50/60 Hz
Mounting
DIN rail or Surface mount (plug into OT08-PC socket)
Number Of Poles
DIN rail or surface mount (plug into OT08-PC socket)
Operating Temperature
-40 to 158
Operating Temperature, Maximum
158
Operating Temperature, Minimum
-40
Pickup Voltage
190-240 V
Poles
8-pin octal-base
Series
201
Special Features
5YR WARR
Standard
UL/CE
Sub Brand
Symcom
Voltage Rating
190-240 VAC
Package Dimensions (L x W x H)
4.13 IN x 2.38 IN x 1.75 IN
Package Dimensions (L x W x H)
104.8 mm x 60.3 mm x 44.5 mm
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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.