EnSpire® Standby UPS Series

This version of the Enspire is now a legacy product.
For a comparable alternative, click here to view the new Enspire Series >>

Affordable protection for telecommunications and data processing applications

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The Minuteman EnSpire Series UPS is a low-cost, high performance standby UPS line. Perfect for small capacity equipment loads.

Security Peripherals
  1. Overview
  2. Features
  3. Models
  4. Software
  5. Specifications
EnSpire Series Overview

Compact Protection - Big Time Value

The Minuteman EnSpire Series UPS is a low-cost high performance UPS line that provides the features needed to protect your valuable equipment. The EN400 and EN600 units each have six outlets, three provide battery support along with spike and surge protection and three with spike and surge protection only.

The EN750 and EN900 have four each of the outlets described above for total protection of up to eight connected devices. In addition, all units have outlets which are specifically spaced to support transformer blocks.

The EnSpire UPS has a small footprint and is uniquely designed with outlets on the top for placement on or under a desk or table and all models can be wall mounted.

For over 30 years, Para Systems, Inc. has provided quality power products and excellent personalized service with direct human response to all service and support calls. EnSpire products pass extensive quality control before being shipped to our end users.


  • Small capacity equipment loads
  • Desktop/laptop workstations
  • Small phone systems
  • VoIP handsets
  • Home entertainment/theater systems
  • Security systems (cameras, DVRs, access control devices)
  • Low-power network devices

EnSpire EN400 & EN600 Features

  • Minuteman SentryPlus Software – SentryPlus auto-shutdown and monitoring software is included with every unit. No special downloads or coupons are required.
  • USB Communications – EnSpire UPS USB connections are automatically recognized by Microsoft Windows® software. No special USB drivers are required. The EnSpire Series automatically recognizes USB connections with its HID (Human Interface Device)-compliant USB communications.
  • Single line phone/fax/modem protection - The EnSpire UPS provides a low cost means of protecting telephone/fax/modem lines.
  • RoHS Compliant – All EnSpire products are manufactured using non-hazardous materials making them safer for the environment (Excludes lead acid batteries).
  • Larger Load Capacities – Minuteman has increased the capacities of the units allowing them to support larger power requirements.
  • Minuteman Support - Para Systems includes full end user support that includes toll-free technical service from our headquarters in Carrollton, Texas.
  • Warranty - The UPS is covered by a three-year parts and labor warranty and $50,000 Minuteman Platinum Protection Plan® (U.S.A. and Canada only). The battery is covered by a two-year warranty.

EnSpire Top View (EN400/EN600)

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Additional features on EnSpire 750 & 900VA (EN750/EN900)

  • Additional Outlets - two additional outlets (1 battery/surge, 1 surge-only)
  • Coax Surge Protection
  • LCD Display – provides clear, readable information about the UPS including:
    • Input voltage
    • Output voltage
    • Battery capacity (in percent capacity)
    • Estimated runtime
    • Input frequency
    • AC normal
    • Battery mode
    • UPS fault
    • Overload
    • Output frequency
    • Weak/bad battery
    • Alarm silence display
    • Connected load consumption (in percent load)

EnSpire Top View (EN750/EN900)

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SentryPlus Power Manager

Get ultimate control over your power with SentryPlus

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.

SentryPlus, included free with all current Minuteman UPS systems, 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-232, SentryPlus 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.

SentryPlus Benefits

  • Windows wizard guided, easy to operate
  • Supports the Microsoft® Windows® 2000/XP hibernation feature (Windows version only)
  • Auto-Save files and graceful operating system shutdown
  • Plan a schedule to shutdown, restart, test UPS and control receptacles
  • Programmable actions(FlexAction)
  • Notification via pager, e-mail, audible alarm, network broadcast and SNMP trap
  • Real-time meters display of UPS data(voltage, frequency, loading percentage,…)
  • History data/graph and power event record for your analysis
  • Multi-computer shutdown/wakeup through TCP/IP network
  • Remote monitoring, control and configuration through TCP/IP network
  • Monitor all UPSs at a glance in a LAN
  • Supports SNMP(Simple Network Management Protocol) get, set and trap commands
  • Supports DMI(Desktop Management Interface) (Windows version only)
  • Supports HTTP, monitor by Microsoft IE or Netscape Communicator
  • Communicate to a UPS using RS-232 or Universal Serial Bus(USB)
  • Multi-lingual design(Windows version only)


View complete specifications table in the EnSpire brochure (PDF)

MODEL EN400 EN600 EN750 EN900
Maximum Power Capacity 400VA / 200W 600VA / 300W 750VA / 400W 900VA / 500W
Topology Standby UPS
Battery-backup / Surge-protected outlets 3 NEMA 5-15R 4 NEMA 5-15R
Surge-only outlets 3 NEMA 5-15R 4 NEMA 5-15R
Nominal Frequency 50 or 60Hz, ±5Hz, autosensing
Voltage Range 100 - 140VAC
Low Voltage Transfer Point 96V (± 3%) resets to utility power at 101V (± 3%) or higher
High Voltage Transfer Point 146V (± 3%) resets to utility power at 140V (± 3%) or lower
Surge Energy Rating 320 J
Input Protection Resettable circuit breaker
Output Non-Battery Operation
Voltage Range 120VAC: 100 - 140VAC
Frequency Range 60Hz: 55 - 65Hz or 50Hz: 45 - 55Hz
Output Battery Operation
Waveform Type Simulated sine wave
Nominal Voltage 120VAC
Voltage Regulation Nominal ±5%
(until Low Battery Warning)
Nominal +2%/-9%
(until Low Battery Warning)
Frequency 50/60Hz, ±0.5Hz(unless synchronized to utility)
Transfer Time 6-8 ms Typical
Overload Capacity 105% for 10-seconds, 115% Shutdown Immediately 105% for 10-seconds, 120% Shutdown Immediately
Protection Over-Current, Short-Circuit Protected and Latching Shutdown
Size - Net L x W x H 11.97 x 4.84 x 3.35 in
(304 x 123 x 85 mm)
12.40 x 7.20 x 3.30 in
(314 x 183 x 83 mm)
Weight - Net 6.44 lb (2.92 kg) 7.05 lb (3.20 kg) 9.40 lb (4.30 kg) 9.70 lb (4.40 kg)
Size - Shipping L x W x H 15.00 x 8.20 x 5.43 in
(380 x 208 x 138 mm)
14.40 x 10.20 x 5.60 in
(367 x 260 x 143 mm)
Weight - Shipping 7.30 lb (3.30 kg) 8.00 lb (3.60 kg) 10.60 lb (4.80 kg) 11.02 lb (5.00 kg)
Regulatory Compliance
Safety Approvals, EMC UL1778, cUL (CSA 22.2 no. 107.1), FCC Class B cTUVus (Conforms to UL1778, CSA 22.2 standards), FCC Class B
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