Figure 4
Microswitch
CAUTION
Acceptable wire: Copper
Torque: 1.8lb-in (0.3kg-cn)
• Do not attempt to open or tamper with the surge device in any way as this may compromise
performance and will void the warranty.
• Megger and hi-potential tests may damage the device. Disconnect all power supplying the
equipment and isolate the device before testing.
• Install for point-of-use. The MA3100 can be used for Type 2 or 3 / Class II or III applications
according to IEC 61643-1.
• Operating and storage temperature of this device must be within -25°C and +85°C.
INSTALLATION
INSTRUCTIONS/
USER MANUAL
MA3100 Series
Surge Protection Devices
801643 Rev C 01/08/10
For more information contact your local MTL rep:
www.mtl-inst.com/contact/
CONGRATULATIONS! YOU HAVE JUST PURCHASED THE BEST SURGE PROTECTION IN
THE INDUSTRY!
Adhering to these instructions guarantees maximum performance of this protection device.
1. INTRODUCTION
These Surge Protective Devices (SPD) provide surge protection for electrical and automation cabinets. They
can be mounted on standard 35 mm rail near the incoming power source to isolate the cabinet from the outside
environment. This product is ideal for manufacturers requiring designed-in power protection.
CAUTION
2. Hazard of EQUIPMENT DAMAGE
• Megger® or hi-potential tests will damage this surge protective device. Turn off all power supplying the
equipment and isolate the surge protective device before testing.
• Not for use on ungrounded systems.
4. REMOVAL
If the blown indicator tab is visible on any of the multiple pole units, then the entire unit has reached the end of its life
and must be replaced. To remove, push up on the unit and rock the top off the 35mm DIN rail (See Figure 3).
Failure to follow these precautions can result in equipment damage.
3. INSTALLATION
NOTE: Follow mounting steps for all 1 Pole, 2 Pole and 4 Pole modules.
• Mount SPD as shown in Figure 1. The MA3100 is designed to mount onto a 35mm DIN rail or top-hat rail
(standard EN 50022, BS 5584) set in the horizontal position. To install, fi rst hook the line side over the
35mm DIN rail and then push in the load side until the spring loaded mounting clip “clicks: onto the rail with
the label text shown in the upright position reading left to right.
• Confi rm SPD is rated for your system by comparing the L-N voltage measurements to the Service Voltage
(Un) on the product label.
• Connect wires as shown in Figure 2 keeping lead lengths as short as possible.
• Acceptable wire size: #14-#6 AWG (2-13mm
2
) Copper, Solid or stranded. Maximum torque to be applied to
terminal screws is 14.75lbs-in (2.6kg -cm)
NOTE: Keep conductor length as short as possible with no sharp bends.
Do not loop or coil wires.
Visual Indicator
Figure 3
5. TROUBLESHOOTING
Diagnostic Operation
• Flag Indicator = Fault.
Check line voltage, breakers and connections. If OK, replace unit.
• Remote Monitoring (Dry Contact option) (see Figure 4). A three-pin socket and plug are provided
to allow the customer to wire a set of normally open (NO) and normally closed (NC) “Dry”
Contacts to a remote monitoring indicator. The customer must provide power for this indicator,
keeping within the specifi cations shown in Figure 4. In event of a fault within the SPD, the internal
mechanical contacts change position.
NOTE: The supplied three-pin plug can accept #16 AWG (1.5mm2) to # 30 AWG
(.05mm²) wire.
Voltage Specifi cations
Cat. No. Service Voltage Poles Dry
Un Contacts
MA3145-120-1-R 120V 1 Yes
MA3145-230-1-R 230V 1 Yes
MA3145-120-2-R 120V 2 Yes
MA3145-230-2-R 230V 2 Yes
MA3145-120-4-R 208 Y/120V 4 Yes
MA3145-230-4-R 400 Y /230V 4 Yes
Loading...