MODEL: MD7FB
Lightning Surge Protectors for
Electronics Equipment M-RESTER
SPECIFICATIONS OF OPTION: Q
COATING (For the detail, refer to M-System's web site.)
/C01: Silicone coating
/C02: Polyurethane coating
LIGHTNING SURGE PROTECTOR FOR
FOUNDATION Fieldbus
(ultra-slim)
APPLICABLE NETWORK
FOUNDATION Fieldbus and other networks complied with
IEC 61158-2
Functions & Features
• High discharge current capacity 20 kA (8 / 20 μs), 1 kA (10
/ 350 μs)
Caution: Power supply to the bus must be limited to 400 mA
or less.
• Ultra-thin 7-mm-wide module can be mounted in high
density
• Excellent protection employing multi-stage SPD circuits
• DIN rail mounting and grounding
• Shield terminal provided
GENERAL SPECIFICATIONS
Construction: Slim-sized front terminal structure
Degree of protection: IP20
Connection: Euro terminal block (torque 0.3 N·m)
Applicable wire size: 0.2 – 2.5 mm
2, stripped length 8 mm
7 [.28]
Grounding: DIN Rail
Housing material: Flame-resistant resin (black)
INSTALLATION
95
[3.74]
Operating temperature: -25 to +85°C (-13 to +185°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: DIN Rail (TH35-7.5, 1-mm-thick)
Oxide film on the surface of an aluminium DIN rail may
lower the electric conductivity between this module and the
ground. Use a steel or copper rail.
98
[3.86]
mm [inch]
Weight: 70 g (2.5 oz)
MODEL: MD7FB–[1]0[2]
PERFORMANCE
LINE TO
LINE
LINE TO
EARTH
SHLD TO
EARTH
ORDERING INFORMATION
• Code number: MD7FB-[1]0[2]
Specify a code from below for each of [1] and [2].
(e.g. MD7FB-FF0/Q)
Max. continuous
operating voltage (Uc)
±±32
±602
≤ 5µA
±ꢀ602
±ꢁ002
≤ 5µA
±ꢀ602*ꢀ
±ꢁ002*ꢀ
≤ 5µA*ꢀ
2oltage protection level
(Up) @4k2 (ꢀ.3 / 50 µs)
• Specify the specification for option code /Q
(e.g. /C01)
Leakage current @Uc
Response time
≤ 4 nsec. ≤ 30 nsec. ≤ 30 nsec.*ꢀ
Approx. capacitance
@ꢀ0 kHz
ꢀ500 pF
ꢀ00 pF
ꢀ00 pF*ꢀ
[1] SHIELD TERMINAL (to earth)
FF: Floating
Max. discharge current
(Imax)
30kA (ꢁ / 30 µs)
ꢀ.0kA (ꢀ0 / ±50 µs)
400mA
FG: Grounding
Nominal current (IN)
Internal series resistance
Surge protection
ꢀ.5Ω ±ꢀ0% per line
IEC 6ꢀ64±-3ꢀ Categories Cꢀ, C3, Dꢀ
SAFETY APPROVAL
*ꢀ. 2alues for the $oating type (FF). Shortcircuited for the ground-
0: None
ing type (FG).
[2] OPTIONS
blank: none
/Q: Options other than the above (specify the specification)
MD7FB SPECIFICATIONS
ES-8066 Rev.9 Page 1/3
https://www.m-system.co.jp/