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SF275M

MCG SURGE PROTECTION
ENHANCED CLASS

BUILDING ENTRY PROTECTOR
Ipeak = 275kA





READY TO GO!
Easy Installation - less than 30 minutes
- Mount pre-tested SF275M to wall
- Connect Micro-Z Cable to panel
- Apply power - system is protected

20-Year Warranty

Free modules for life

Free fuses for life

ulbal1i1.gif (1059 bytes)
UL 1449
2nd Edition Listed

ANSI/IEEE C62.41-1991
Category C

SF275M (8837 bytes)
DESCRIPTION FEATURES
The SF275M is positioned at the main service panel where the need for continuous operation is critical and the probability of lightning or high transient exposure is likely.

The SF275M employs four higher surge current pathways for improved diversion to ground. Coupled with MCG's patented low impedance design and its exceptionally capable Micro-Z cabling insures a minimum let-through voltage to downstream equipment. The plug-in, plug-out protection modules guarantee a quick and easy 5 minute repair in the unlikely event of catastrophic transients.

The SF275M unit provides a front panel matrix of LED indicators, which monitor the exact percentage of protection present on each phase. Other features include a transient event counter, an audible alarm and remote contacts. The SF275M comes in a NEMA 12 enclosure, but others are available.

SF275M Data Sheets (154KB)
SF275M Engineering Specifications (22KB)
 SF275M Installation Instructions (389KB)
  • Ipeak of 275,000 Amps per phase - exceptional energy handling capability!
  • Built-in redundancy - four levels of protection to keep your operations functioning.
  • All modes protected, L-N, L-G, L-L, N-G
  • Patented "low impedance" Micro-Z design.
  • Large cross-sectional copper conductors.
  • Micro-Z cable provided at no cost.
  • Precise, on-line percent protection status indicators.
  • Diagnostics - pinpoints the problem location, shows exact status of protection available.
  • Remote status monitoring capability.
  • Personnel safety - integrated power disconnect with LEXAN dead-front construction. Only MCG has it!
  • Warranty - 20 years on Protector and a lifetime replacement of modules and fuses without charge.

CONFIGURATIONS:
MODEL RATED VOLTAGE DESCRIPTION

ENERGY ABSORPTION
(8/20µs)
JOULES TOTAL

UL 1449 SURGE VOLTAGE (8/20us)
500A
SF275M-120T 120/240VAC 1Ø, 3W+GND 17,444 460
SF275M-120Y 120/208VAC 3Ø, 4W+GND, WYE 17,444 460
SF275M-220Y 220/380VAC 3Ø, 4W+GND, WYE 47,040 760
SF275M-240DCT 240/120/120VAC 3Ø, 4W+GND, HI-LEG 30,128 760/460
SF275M-277Y 277/480VAC 3Ø, 4W+GND, WYE 50,400 860

ELECTRICAL SPECIFICATIONS
MAX. CONTINUOUS OPERATING VAC:  115%
RESPONSE TIME:  <5 NANOSECONDS
MODES OF PROTECTION:  L-N, L-G, L-L, N-G
SURGE CURRENT/PHASE (8/20µs) - 1 EVENT:  275kA
SURGE LIFE/PHASE (8/20µs) - 10,000 IMPULSES:  9kA
FILTER ATTENUATION MIL STD 220A (50ohm):  120VAC 277VAC
-30db:  100kHz 80kHz
-40db:  200kHz 180kHz
-50db:  280kHz 210kHz
-60db:  310kHz 390kHz
% PROTECTION STATUS INDICATORS:  100% GREEN LED/ PHASE
75% GREEN LED/ PHASE
50% YELLOW LED/ PHASE + ALARM MUTE
25% RED LED/ PHASE + ALARM MUTE
ADDITIONAL STATUS INDICATORS:  EVENT COUNTER, REMOTE DRY CONTACTS
OPERATING ALTITUDE:  13,000 ft. (4000m)
TEMPERATURE (OPERATING/STORAGE):  -40° to +70°C/-40° to +85°C
ENCLOSURE:   NEMA 12, 14 GAUGE STEEL
DIMENSIONS:   14" x 12" x 7"
MOUNTING:   14.75" x 10"/.3125 ID - 4 HOLES
CABLE CONNECTION:   MICRO-Z CABLE SUPPLIED FREE
SHIPPING WEIGHT:  31 lbs.

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 © 2004 Sentinel Power Inc. All rights reserved.
Last Updated 09/30/08