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Vertiv Liebert® Network Power Switch NPS-II FL4 100 Amp 4 Pole
Intelligent Static Transfer Switch for Business Critical Continuity
Modern data centers and mission-critical IT environments demand uninterrupted power availability. Even a brief power interruption can result in application downtime, hardware failures, operational disruption, and financial loss. The Vertiv Liebert® Network Power Switch (NPS-II FL4) 100 Amp 4 Pole is specifically designed to eliminate power distribution failures by providing seamless transfer between two independent power sources, ensuring maximum business continuity. The brochure describes the NPS-II as an intelligent static transfer switch that ensures maximum reliability to critical loads by eliminating failures caused by power distribution problems.
Radiant Info Solutions is a trusted Vertiv partner offering complete consultation, supply, installation, commissioning, integration, testing, and post-sales support for Vertiv Network Power Switches across India.
Whether your infrastructure includes enterprise data centers, banking environments, telecom facilities, manufacturing plants, healthcare institutions, cloud infrastructure, or industrial automation, our certified engineers ensure seamless deployment of Vertiv intelligent power switching solutions.
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Why Partner with Us?
Authorized Vertiv Partner for ITMS Solutions
Radiant Info Solutions is a certified Vertiv partner, delivering trusted IT Management Solutions. We provide genuine products with manufacturer-backed warranties and support.
End-to-End Infrastructure Management
From KVM systems to IT racks, and PDUs, we offer complete Vertiv ITMS solutions. Our expertise ensures your IT infrastructure runs efficiently and reliably.
Certified Technical Team & Expert Deployment
Our trained engineers handle design, installation, and commissioning of Vertiv solutions. We ensure seamless integration with minimal disruption to your operations.
Proactive Maintenance & Support Services
Radiant offers AMC, preventive maintenance, and remote monitoring support. We help you avoid downtime and extend the life of your critical infrastructure.
Nationwide Reach with Fast Delivery
With PAN India presence and logistics, we ensure timely delivery and support for Vertiv products. Our responsive team is available for on-site service wherever needed.
300+
Active Client Sites
15+ Years
Expierence in Deployment
10+
Certified Technical Experts
360°
Technical Assistance
What is Vertiv NPS-II FL4 100 Amp 4 Pole?
The Liebert® Network Power Switch NPS-II FL4 is a Three Phase 4 Pole Intelligent Static Transfer Switch designed to automatically transfer the connected critical load between two independent AC power sources whenever the preferred source moves beyond preset voltage or frequency limits.
The NPS-II FL4 utilizes semiconductor switching technology together with an independent microprocessor-based control system to provide uninterrupted power availability while protecting mission-critical equipment from power abnormalities. The brochure explains that the switch uses semiconductor switches, an independent micro-controller, selectable source priority, and user-selectable parameters to ensure continuity of power during source failures.
Unlike conventional manual transfer switches, the Vertiv Network Power Switch performs power transfer automatically within milliseconds, maintaining continuous operation for sensitive IT equipment.
Technical Specifications – Vertiv Liebert® NPS-II FL4 100 Amp 4 Pole
| Specification | Details |
| Model | Vertiv Liebert® NPS-II FL4 |
| Current Rating | 100 Amp |
| Switching Configuration | 4 Pole (Phase + Neutral) |
| Input / Output | Three Phase |
| Nominal Voltage | 400 / 415V (3 Phase + Neutral) |
| Voltage Tolerance | Low Band: -30% to +15%, Medium Band: -25% to +15%, Narrow Band: -15% to +15% |
| Frequency | 48–52 Hz (Nominal), 40–70 Hz (Wide) |
| Efficiency | >97% |
| Transfer Time | <3 ms, <5 ms (Default), <8 ms |
| Manual Bypass | Yes |
| Cooling | Forced Cooling |
| Protection | IP20 |
| Operating Temperature | 0°C to 40°C |
| Relative Humidity | Up to 95% (Non-Condensing) |
| Standard | IEC 62310-3 |
| Communication | RS485 Modbus (Optional) |
| Dimensions | 800 × 600 × 1750 mm |
| Weight | Approx. 225 kg |
These specifications make the Vertiv NPS-II FL4 an ideal solution for high-availability environments where uninterrupted power is essential.
LCD Display & LED Status Indicators
The front panel provides comprehensive system visibility through LCD display parameters and LED indications, including:
- Source voltages
- Output load status
- Date & Time
- Source health
- Source priority
- Transfer status
- Sensitivity selection
- Fault indications
This simplifies monitoring and troubleshooting of the power distribution system.
Key Features of Vertiv Liebert® NPS-II FL4 100 Amp 4 Pole
Intelligent Static Switching
The Vertiv NPS-II FL4 continuously monitors both incoming power sources and intelligently transfers the connected load to the healthier source whenever abnormal voltage or frequency conditions are detected.
4 Pole Three Phase Protection
The 100 Amp FL4 model is designed as a Three Phase + Neutral (4 Pole) static transfer switch, making it ideal for critical three-phase electrical installations requiring complete neutral switching.
Ultra-Fast Transfer Time
The NPS-II FL4 provides extremely fast transfer capability:
- High Sensitivity: <3 ms
- Medium Sensitivity (Default): <5 ms
- Low Sensitivity: <8 ms
This rapid switching minimizes interruption to connected mission-critical equipment.
High Operational Efficiency
The Vertiv NPS-II FL4 delivers an efficiency greater than 97%, reducing energy losses while maintaining reliable operation under continuous duty conditions.
Multiple Protection Functions
To safeguard business-critical infrastructure, the NPS-II FL4 includes protection against:
- Input Under Voltage
- Input Over Voltage
- Output Overload
- Output Short Circuit
These protection mechanisms help ensure stable and reliable power delivery to sensitive equipment.
Independent Microprocessor Control
The integrated microprocessor independently monitors source conditions and allows users to configure source priority and operating parameters, ensuring intelligent and reliable power transfer without dependence on upstream control systems.
Manual Bypass Facility
The NPS-II FL4 includes a built-in manual bypass facility, enabling maintenance activities without interrupting power to the connected load.
Why Choose Radiant Info Solutions?
Certified Vertiv Partner
Radiant Info Solutions supplies genuine Vertiv products backed by OEM warranties, ensuring authentic equipment and reliable support.
Expert Consultation
Our power infrastructure specialists assess your electrical architecture and recommend the most suitable Network Power Switch based on redundancy requirements.
Professional Installation
Certified engineers perform complete installation, wiring, testing, commissioning, and load validation following industry best practices.
End-to-End Integration
We integrate Vertiv Network Power Switches with UPS systems, PDUs, power monitoring platforms, Building Management Systems (BMS), and complete data center infrastructure.
Annual Maintenance & Support
Radiant offers preventive maintenance, health checks, firmware support (where applicable), troubleshooting, and comprehensive AMC services to maximize equipment reliability.
Benefits of Vertiv NPS-II FL4
- Intelligent automatic source selection
- Zero manual intervention during source failure
- Millisecond transfer between redundant power sources
- Enhanced business continuity
- Improved equipment protection
- Reduced operational downtime
- Flexible sensitivity selection
- User-configurable source priority
- High efficiency with minimal power loss
- Easy integration into Building Management Systems
Applications
The Vertiv Liebert® Network Power Switch NPS-II FL4 is suitable for numerous mission-critical applications where continuous power availability is essential.
Data Centers
Protect racks, servers, storage systems, virtualization platforms, and networking equipment from unexpected power source failures.
Enterprise Server Rooms
Maintain continuous power for business-critical IT applications, ERP servers, databases, and enterprise infrastructure.
Banking & Financial Institutions
Ensure uninterrupted operation of transaction processing systems, payment gateways, and financial applications.
Healthcare & Hospitals
Protect medical servers, imaging systems, laboratory equipment, and healthcare information systems.
Telecom Infrastructure
Maintain continuous uptime for communication systems and telecom switching equipment.
Industrial Automation
Support manufacturing plants, process control systems, SCADA environments, and industrial automation equipment requiring highly reliable power.
The manufacturer highlights the NPS-II for applications such as Data Centers, Call Centers, Process Control, and Automation, where dual power sources (UPS, stabilizers, or power conditioners) are monitored and intelligently switched to maintain power continuity.
Radiant Info Solutions – Your Trusted Vertiv Partner
Radiant Info Solutions is a leading Vertiv Partner, Dealer, Supplier, Consultant, and System Integrator in India, delivering intelligent power management solutions for enterprise IT, data centers, industrial facilities, and mission-critical applications.
From solution consulting and OEM supply to installation, commissioning, integration, testing, preventive maintenance, and AMC services, we provide complete lifecycle support for Vertiv Network Power Switches. Our experienced engineers ensure that every deployment is optimized for maximum uptime, operational efficiency, and long-term reliability.
Whether you are designing a new data center, upgrading an existing server room, or implementing redundant power architecture for critical applications, Radiant Info Solutions is your trusted technology partner for Vertiv Liebert® Network Power Switch NPS-II FL4 100 Amp 4 Pole solutions across India.
Why Choose Radiant as Your Preferred Vertiv Partner?
Radiant Info Solutions is the preferred partner for Vertiv, offering unmatched expertise in Vertiv’s power and IT infrastructure solutions. With a commitment to customer satisfaction, Radiant provides tailored solutions, exceptional service, and reliable support, ensuring seamless and efficient operations for all your IT needs.
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Frequently Asked Questions
What is the Vertiv NPS-II FL4 100 Amp?
It is an intelligent three-phase four-pole static transfer switch that automatically transfers the load between two independent power sources to ensure uninterrupted power availability.
What makes the FL4 different from FL3?
The FL4 is a 4 Pole (Phase + Neutral) model, while the FL3 is a 3 Pole (Phase) configuration.
What is the transfer time?
Depending on sensitivity settings, the transfer time ranges from less than 3 milliseconds to less than 8 milliseconds.
Is manual bypass available?
Yes. The NPS-II FL4 includes an integrated manual bypass facility.
Can it integrate with Building Management Systems?
Yes. Optional RS485 Modbus communication enables BMS integration.
What industries use Vertiv Network Power Switches?
Data centers, telecom, banking, healthcare, manufacturing, automation, and enterprise IT environments
Does Radiant provide installation?
Yes. Radiant offers complete consultation, installation, testing, commissioning, and support across India.
Is the Vertiv NPS-II suitable for dual UPS environments?
Yes. It is specifically designed to operate with dual power sources such as two UPS systems or a UPS and bypass source.
Does Radiant provide AMC?
Yes. We provide Annual Maintenance Contracts (AMC), preventive maintenance, health checks, and technical support
Why choose Radiant Info Solutions?
Radiant combines Vertiv expertise, certified engineers, nationwide deployment capability, and end-to-end power infrastructure services to deliver reliable business continuity solutions.
To find out more speak to one of our Vertiv Sales specialists !
Call: +91-11-46515639/40 or email: leads@radiant.in
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