MTL Instruments MA4000 Operating Manual

For more information please contact your local MTL ofce

or visit our web site at www.mtlsurge.com

INSTALLATION INSTRUCTIONS

MA4000 Series

The Americas: [phone]
UK: [phone]
Singapore: [phone]

801713 Rev - 10/29/07

The Netherlands: [phone]
Italy: [phone]
Australia: [phone]
India: [phone]

This installation guide is applicable to the following MTL Surge Technologies branded products:

66.5

2

MA4020-F-024-1-D-R MA4020-F-048-1-D-R MA4020-F-110-1-D-R MA4020-F-230-1-D-R

The MA4000 product range attenuates voltage and current spikes from all sources that are commonly experi-

enced in industrial environments. The products are specically designed to safely redirect damaging spikes to

earth therefore protecting any sensitive electronics located locally.

The MA4000 enclosure can readily be mounted using the four xing points provided on the enclosure. Flying

leads are provided for easy connection to the power supply cable, along with remote monitoring wires.

Where required, the remote monitoring wires can be utilised to provide indication on the status of the MA4000
unit(s). A short circuit indicates that the unit is fully operational, whereas an open circuit connection provides
indication that the MA4000 device requires replacing.

There are currently four variants in the MA4000 range:
24Vdc 48Vdc 110Vac 230Vac

Mounting

The MA4000 range should ideally be mounted using the four holes provided and with the cable exiting from

the bottom (gure 2).

The MA4000 range is certied for use in hazardous areas, see data sheet and unit labeling for details.

SPECIAL CONDITIONS OF USE

l WARNING: These devices must be installed by competent, authorised personnel. Isolate circuit
before connecting/disconnecting ac/dc power source.
l The ying leads must be suitably protected against mechanical damage and terminated in a
suitable facility for the utilised protection concept.
l ELECTROSTATIC HAZARD WARNING: Do not rub with a dry cloth or clean with solvents.
l The MA4000 range of products are factory sealed.

Positioning

The MA4000 range should be mounted close to the equipment it is protecting. It should be bonded directly to
the equipment with as short a length of cable as possible.

Avoid large loops and sharp bends in the wire. Cut the wire as short as possible when connecting the MA4000
and connect the wires in the following manner:

AC Power DC Power

Applications Applications

Brown Live + power supply
Blue Neutral - power supply
Green / Yellow Earth Earth
Black Monitoring 1 Monitoring 1
Grey Monitoring 2 Monitoring 2

AC Unit

DC Unit

Figure 2 Mounting the MA4000

6.00

4.00 dia.

450mm Approx.

58

94

Cable: 5 core 2.5mm

148

119

138

Figure 3 Dimentions (mm)

Weight

1 Kg

Supply voltage

MA4020-024 24Vdc MA4020-048 48Vdc MA4020-110 110Vac MA4020-230 230Vac

Line frequency

MA4020-024dc MA4020-048dc MA4020-110dc to 60Hz MA4020-230dc to 60Hz

Fusing

Although the MA4000 range have temperature protection devices tted it is important that external fusing is t­ted to interrupt the maximum fault current which the supply can deliver under fault conditions. The chosen fuse
should be of a HBC (high breaking capacity) or HRC (high rupture capacity) type.

Figure 1 Connection

Equipment

Green / Yellow

Brown

Blue

Remote monitoring wires

Remote monitoring wires are provided as an optional way of knowing the status of the MA4000 unit. These
wires have a closed contact which will open to indicate that the protection provided by the MA4000 unit is no
longer present. The remote monitoring lines should be fused using a 250Vac, 2A rated fuse to protect the remote
contact inside the unit.

Green / Yellow

Equipment

L

N

E

Brown

Blue

+ve

-ve

E

Maintenance

This product is not a repairable unit, if the product fails it must be replaced.

The MA4000 unit requires no maintenance as there are no user serviceable parts. However where the remote
monitoring wires are not being fully utilised a maintenance plan may be advisable to check the status of the
protectors.