Page 26 of 27 MCM-Inst-1.10
5.3 EIA RS-485 Interface
RS-485 Output Isolation:
4500 Vac RMS
Driver Output:
Voltage (Open Circuit):
±6 Vdc maximum
Voltage (54 Ω load):
±1.5 Vdc minimum
Current (54 Ω load):
±60 mA typical
Rise Time (54 Ω || 50 pF load):
900 nS typical
Receiver:
Common-Mode Range:
-7 Vdc to +12 Vdc max
Sensitivity:
±200 mV
Bus Load:
1/8 unit load, up to 64 devices
Failsafe Modes:
bus open, shorted, and idle
5.4 Ethernet Interface
Network Interface:
RJ45 Ethernet 10BASE-T or 100BASE-TX (auto-sensing)
Ethernet Version:
2.0/IEEE 802.3
Ethernet Isolation:
1500 V
5.5 Certifications
Safety:
UL 61010-1:
3rd Edition, UL file number E312220
CAN/CSA-C22.2 No. 61010-1-12
UL 508A:
3rd Edition, 2018, UL file number E495898
Emissions:
FCC Part 15:
Class B, radiated and conducted emissions
CISPR / EN 55022:
1994, Class B, radiated and conducted emissions
5.6 Environmental
Operating Temperature:
MCM12, MCM24, MCM36, MCM48, MCM60:
–30°C to +70°C (–22°F to 158°F)
MCM72, MCM84:
–30°C to +65°C (–22°F to 149°F)
All models with circuit breaker:
-25°C to +55°C (-13°F to 131°F)
Altitude:
Up to 3000 m (9842 ft)
Operating Humidity:
non-condensing, 5 to 90% relative humidity (RH) up to 40°C, decreasing
linearly to 50% RH at 55°C.
Pollution:
POLLUTION DEGREE 2 - Normally, only non-conductive pollution; occasionally, a tempo-
rary conductivity caused by condensation must be expected.
Indoor Use:
Suitable for indoor use.
Outdoor Use:
Suitable for outdoor use if electrical enclosure NEMA 4 rating is preserved.
5.7 Mechanical
See datasheet.
5.8 FCC Information
This equipment has been tested and complies with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may
