Product Overview
The Vertiv NetSure 731 A41‑S7 (Former Emerson brand) is high-efficiency single-output embedded DC power system with standard 4U 19-inch rack dimension, specially designed for small FTTx OLT cabinets, indoor access network equipment and compact unmanned communication sites. With ultra-wide 80~300VAC single-phase AC input, it converts alternating current into adjustable -42~-58VDC stable DC power, nominal 53.5VDC. This system supports flexible rectifier configuration, equipped intelligent monitoring unit and complete multi-level load shedding circuit, built-in full-range lightning protection on AC, DC and signal terminals. Featuring ECO energy-saving mode and intelligent fan speed regulation, it achieves up to 96% conversion efficiency, widely used for small-capacity communication equipment backup power globally.
Key Features
Standard 4U 19-inch rack size:483×390×178mm, front full maintenance & dual-side wiring design for easy installation
Ultra-wide AC input range:80~300VAC,50/60Hz, excellent adaptability for unstable municipal grid and diesel generator power
Adjustable DC output:‑42~‑58VDC(default53.5VDC), single output structure, PF≥0.99 with low harmonic distortion
High-efficiency rectifier matching, peak conversion efficiency up to 96%, ECO sleep mode to reduce idle power consumption
Hot-swappable rectifier module design, replacement without shutting down whole power system, minimize site maintenance downtime
Built-in multi-stage BLVD/LLVD load shedding protection, effectively extend service life of lead-acid/lithium battery packs
Full lightning surge protection for AC input, DC output and signal ports, compliant telecom anti-surge standard
Intelligent temperature-controlled variable speed fan, reduce running noise and prolong fan service life
Rich communication ports: RS232+Dry contact alarm, realize remote data monitoring & fault alert; CE certified
Wide operating temperature range:‑40℃ ~ +70℃, stable running under high/low temperature harsh cabinet environment
Technical Specifications
| Item | Details |
| Model | NetSure 731 A41‑S7 |
| Brand | Vertiv / Former Emerson |
| Cabinet Size | 4U,19 Inch (483×390×178mm) |
| AC Input | 80~300VAC, Single Phase,50/60Hz |
| Max Input Current | 22A |
| DC Output | Adjustable -42~-58VDC(Nominal 53.5VDC), Single Output |
| Rated Output Current | 10A |
| Total Output Power | Over 500W |
| Power Factor | ≥0.99 |
| Rectifier Efficiency | Up to 96% |
| Protection | OVP/OCP/SCP/OTP + AC/DC/Signal Surge Protection |
| Communication | RS232 + Dry Contact Alarm |
| Working Temp | -40℃ ~ +70℃ |
| Certifications | CE |
| MOQ | 1 Set |
| Unit Price | $890 / Set (1~9pcs) |
| Monthly Supply | 1000 Sets |
| Delivery Port | Shenzhen |
| Warranty | 12 Months |
Applications
FTTx OLT Small Indoor Cabinet DC Backup Power Supply
Mini 4G/5G Indoor Micro Base Station Power System
DSLAM & Access Network Communication Equipment Power
Security Monitoring & Small Industrial Control DC Power
Old Mini Communication Cabinet Power Renovation Upgrade
Remote Unmanned Outdoor Small Pole-mounted Cabinet Power
Why Choose Us
We are a professional manufacturer and one‑stop solution provider for communication DC power systems, boasting mature R&D strength, large‑scale production capacity and flexible service modes. We fully support OEM and OBM cooperation, helping global partners create differentiated power products.
-
Powerful R&D & Customization Ability
We have a professional technical team with years of experience in the power industry. We can provide personalized customized services covering power configuration, external interfaces, functional parameters, appearance design and logo printing, to satisfy diverse demands from telecom operators, system integrators and equipment manufacturers.
-
Comprehensive OEM & OBM Services
We offer full‑cycle cooperation support from product design, prototype testing, certification to mass production. With efficient development process and strict quality management, we help you quickly launch products and build exclusive brand advantages.
-
Large Production Capacity & On-time Delivery
We own standardized production workshops and complete production lines. Relying on a stable supply chain and mature production technology, we maintain sufficient inventory and strong production capacity, ensuring on-time delivery even for bulk orders and long-term cooperative supply.
-
Strict Multi-level Quality Inspection
All products will pass full-load operation test, high-low temperature aging test, safety performance test and simulated on-site operation test before delivery. We adopt high-quality original components and implement strict quality control standards to guarantee long-term stable operation of products in various harsh environments.
-
Full Lifecycle Technical & After-sales Support
We establish a complete service system including pre-sales consultation, in-sales technical guidance and after-sales maintenance. Our technical team responds quickly to provide remote debugging, on-site technical guidance and spare parts supply, protecting the stable operation of your power system all the time.
-
Rich Global Project Experience
Our products have been exported to many countries and regions, widely applied in communication, data center, industrial control, new energy and other fields. With rich project experience, we can provide targeted power solutions for different regional standards and application scenarios.
We sincerely look forward to establishing long‑term stable cooperative partnership with you.
English
