View legacy Enspire 400-900 Series

Enspire® Uninterruptible Power Supply

Standby simulated sine wave desktop/floor/wallmount UPSs for servers, network devices, and phone systems

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The Minuteman Enspire Series UPS offers standby protection and compact desktop/floor/wallmount profile perfect for a range of small to medium load applications.

Security Peripherals
  1. Overview
  2. Product Video Tour
  3. Features
  4. Models
  5. Accessories
  6. Software
  7. Specifications
Enspire Overview

Low-profile, High protection

The Minuteman Enspire Series UPS is a low-cost, high performance UPS line that provides the features needed to protect your valuable equipment. The EN350 and EN550 units each have eight outlets, four provide battery support along with spike and surge protection and four with spike and surge protection only.

The EN750LCD and EN900LCD each have five of the outlets described above for total protection of up to ten connected devices. In addition, all units have outlets which are specifically spaced to support transformer blocks.

Key Product Features
LCD Status Display (750VA & 900VA models)
Power information in real time
Tool-less Battery Panel
Easy-access setup and maintenance
SentryHD Compatible
Monitor and Manage via USB (Models 550/750/900)

All-new LCD Status Display
(750VA and 900VA models)

Take the guesswork out of UPS & power status monitoring with Enspires's new LCD status display.

1. Unit status indicator
2. Load & battery meters
3. Numeric Display
4. Display scroll button
5. Alarm silence button
6. On/Off button
Enspire Status Display

Key Features

  • Economical Standby Protection Hardware
    Cost-effective surge and backup protection for small loads
  • Versatile Connection Options
    8 (350 and 550) or 10 (750 and 900) outlets to ensure a connection for all of your devices
  • Compact, Wall-Mountable Case
  • Tool-less, Hot-Swappable Battery Replacement
  • USB Communications (HID Compliant)
    Enspire UPS USB connections are automatically recognized by Microsoft Windows (550/750/900 models)
  • Single Line Phone / Fax / Network Protection
    The Enspire UPS provides a low cost means of protecting telephone/fax/network lines
  • Independent Battery Bypass
    Provides surge and spike protection, even when batteries are weak or dead

Features on 750VA and 900VA Models:

  • Easy to Read LCD Display
    Real-time updates on system and power status, estimated runtime remaining based on attached load
  • Green Mode
    Lower power consumption mode during off-time
  • Coax Protection
    Protect coaxial cable for AV equipment from damaging spikes and surges
  • Industry Leading Product Protection
    Standard 3-year parts and labor warranty with 2-year non-prorated battery coverage; $50,000 Platinum Protection Plan (US and Canada)
  • ECO Mode on EN900LCD

Complete Protection for:

  • Desktop Computers
  • Standalone Servers
  • Network Switches, Hubs, and Peripherals
  • VoIP Communications
  • Telephone Systems
  • External Computer Accessories
  • Security Cameras and DVRs

WARNING: This product can expose you to chemicals, including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to:

Enspire Product Tour Video

Enspire Features

Protects Against Spikes, Surges, Brownouts and Blackouts Feature-rich Design
  • Compact case design
  • LCD front panel display (EN750LCD, EN900LCD)
  • USB communications (except EN350)
  • Hot-swappable batteries
  • Tool-less battery access
  • RJ11/45 Network/Phone/Fax protection
  • 3-year limited warranty (electronics) 2-year warranty (batteries)
  • RoHS 2 compliant
  • ECO Mode (EN900LCD)
  • Transformer-friendly receptacles
  • DC Startup capability
  • Independent Battery Bypass
  • Built-in self-diagnostics testing
  • Audio & Visual alarms
LCD Display provides real-time information (750/900 models)
  • UPS status and condition
  • Battery Capacity bar graph
  • Estimated Runtime
  • AC and DC modes
  • Load Capacity bar graph
  • Warning / Fault icons
Compatible with Minuteman SentryHD Management Software
  • Automatically saves and shuts down unfinished applications
  • Gracefully powers down your PC during extended blackouts
  • Provides comprehensive monitoring capabilities
  • Integrates into SNMP network (when connected to a computer via USB port)
  • Not supported by EN350

Enspire Features

1. Battery and Surge Receptacles (4 / 5)
2. Surge-only Receptacles (4 / 5)
3. Network/Phone Surge Protection
4. USB Comm. Port (550/750/900)
5. Coax Surge
6. Input Power Cord
7. Input Breaker
Extended Warranty Plans

5 Full Years of Trouble-free Service - Guaranteed

Minuteman UPSs already ship with the best warranty in the business at 3 years, including non-prorated battery coverage on most products.

Two levels of Extended Warranty Plans are also available on most UPS product lines to provide an additional 2 years of coverage. These plans ensure a full 5 years of trouble-free ownership.

SentryHD Power Manager

Get ultimate control over your power with SentryHD

In today’s complex world of data, networks, and software, control and management of applications is vital, especially when it comes to the power that is supplied to these devices.

SentryHD, included free with all current Minuteman UPS systems, is the latest update to Minuteman’s popular Sentry monitoring and management software. This powerful tool provides users and network managers a range of monitoring & managment tools for their power, allowing total control before, during, and after power problems.

With a simple connection to the UPS via USB or RS-2321, SentryHD provides the capability to configure UPSs, monitor power, and diagnose issues, all from secure connections on the network. This eliminates wasteful runs around the facility, saving time and money.

SentryHD Capabilities

  • Monitor, manage, and safely shutdown Minuteman UPSs via USB or RS-232
  • Simultaneous USB and RS-232 communications for added flexbility
  • Sends notifications of power events via email, SMS
  • Schedule shutdown and startup of equipment to save energy
  • Batch Configuration capable, saving valuable setup time
  • 32 & 64-bit operating system support
  • User-programmable alarm levels - customize warnings
  • Supports UPS load-shedding to extend runtime for critical components

1Connection method varies by product line; see specifications tab for specific details about this model.

View complete specifications table in the Enspire brochure (PDF)

Model Number EN350 EN550 EN750LCD EN900LCD
Apparent Output Power 350VA 550VA 750VA 900VA
Active Output Power 200 Watts 300 Watts 450 Watts 500 Watts
Type Floor/wall-mount
Agency Approvals cTUVus (Conforms to UL1778, CSA 22.2), CE, FCC Class B
Green Compliance RoHS 2 Directive 2011/65/EU
Warranty 3-years Electronics / 2-years Batteries
Equipment Protection Policy Up to $50,000 (Continental U.S. and Canada only)
Input Power Plug/Cable NEMA 5-15P W/4 ft cord NEMA 5-15P W/6 ft cord
Receptacles (Battery/Surge) Type (4/4) NEMA 5-15R (5/5) NEMA 5-15R
Voltage Range 95VAC to 140VAC
Frequency Range 60Hz ±6Hz
Surge Protection >500 joules
Voltage Default 95VAC to 140VAC
Frequency 60Hz ±5Hz
Efficiency (AC-AC) >95% at full-rated load
Output (On Battery)
Voltage 120VAC
Voltage Regulation 120VAC ±5% until low battery warning
Frequency 60Hz ±0.5Hz unless synchronized to line
Wave Form Simulated Sine Wave
Dynamic Response ±10% at 100% load change in 30ms (Linear Load)
Communications Port None USB (Cable included,
550/750/900 models only)
LCD Status Indicators None AC Normal, On Battery,
Weak/Bad/Disconnected Battery,
Internal Fault
LCD Meter Display None Input & Output Voltage,
Input & Output Frequency,
Load Capacity Bar Graph,
Battery Capacity Bar Graph,
Est. Runtime
Audible Alarms On Battery, Low Battery, Internal Fault, Overload, Weak/Bad/Disconnected Battery
Battery System
Full Load Runtime (non-linear) 3 min. 3 min. 3 min. 3 min.
Half Load Runtime (non-linear) 12 min. 11 min. 11 min. 11 min.
Hot Swappable Batteries Yes
Battery Module Type BM0067 BM0067 BM0068 BM0068
Typical Recharge Time 8 hours to 90% from total discharge
Battery Type Sealed, Non-Spillable, Maintenance Free, Lead Acid
Net Dimensions:
L x W x H
12.4” x 5.1” x 3.7”
(316 x 130 x 94 mm)
12.6” x 7.2” x 3.6”
(320 x 183 x 92 mm)
Net Weight: lbs. (Kgs.) 6.2 (2.81) 6.4 (2.90) 7.7 (3.49) 8.4 (3.81)
Shipping Dimensions:
D x W x H
14.7” x 5.6” x 8.3”
(373.4 x 142.2 x 210.8 mm)
15.0” x 5.6” x 10.4”
(381.0 x 142.2 x 264.2 mm)
Shipping Weight:
lbs. (Kgs.)
7 (3.18) 9 (4.08)

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