SF275M

MCG SURGE PROTECTION

ENHANCED CLASS 

BUILDING ENTRY PROTECTOR
Ipeak = 275kA





Easy Installation - <30 min.

- Mount Pre-tested SF275M
- Connect Micro-Z Cable to panel
- Apply power - system is protected!

10-Year Warranty

Free Modules for Life

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UL 1449
2nd Edition Listed

ANSI/IEEE C62.41-1991
CATEGORY C

SF275M.JPG
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 guarantees a quick and easy repair in the unlikely event of unexpectedly large transients. Modules can be replaced in less than 5 minutes.

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 SF275M DATA SHEETS
SF275M Engineering Specifications SF275M ENGINEERING SPECIFICATIONS
SF275M INSTALLATION SHEETS SF275M INSTALLATION SHEETS
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  • 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 indicator

  • 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 - 10 year on Protector and a lifetime replacement of modules without charge.

CONFIGURATIONS:
MODEL RATED VOLTAGE DESCRIPTION

ENERGY ABSORPTION
(8/20µs)
JOULES TOTAL

UL1449
SURGE VOLTAGE
(8/20us)
500A
SF275M-120T 120/240V 1Ø, 3W+GND 17,444 400
SF275M-120Y 120/208V 3Ø, 4W+GND, WYE 17,444 400
SF275M-220Y 220/380V 3Ø, 4W+GND, WYE 47,040 700
SF275M-240DCT 240/120/120V 3Ø, 4W+GND, HI-LEG 30,128 700/400
SF275M-277Y 277/480V 3Ø, 4W+GND, WYE 50,400 800

ELECTRICAL SPECIFICATIONS
MAX. CONTINUOUS OPERATING VAC:    115%
RESPONSE TIME:    <5 NANOSECONDS
MODES OF PROTECTION:    L-N, L-G, L-L, N-G (where applicable)
SURGE CURRENT/PHASE:    275kA (8/20µs) - 1 EVENT
SURGE LIFE/PHASE:         9kA (8/20µs) - 10,000 IMPULSES
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 (#10 AWG)
SHIPPING WEIGHT:    31 lbs.