Which plug adaptor do I need when travelling from Indonesia to Montserrat (Leeward Islands)?

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Summary

The table below summarises the plug types, voltage and frequency of electrical current in both Indonesia and Montserrat (Leeward Islands).

IndonesiaMontserrat (Leeward Islands)
Plug TypesC, F, GA, B
Voltage127V, 230V230V
Frequency of electrical current50Hz60Hz

Plug Adaptors

In Indonesia there's more than one plug type in use.

What type of plug does your appliance have?

Your Appliance has Plug Type C

In Montserrat (Leeward Islands) there's more than one socket type in use. You may require more than one adaptor.

Socket Type C
(Indonesia) to Plug Type A
(Montserrat (Leeward Islands))

Socket Type C
(Indonesia) to Plug Type B
(Montserrat (Leeward Islands))

Your Appliance has Plug Type F

In Montserrat (Leeward Islands) there's more than one socket type in use. You may require more than one adaptor.

Socket Type F
(Indonesia) to Plug Type A
(Montserrat (Leeward Islands))

Socket Type F
(Indonesia) to Plug Type B
(Montserrat (Leeward Islands))

Your Appliance has Plug Type G

In Montserrat (Leeward Islands) there's more than one socket type in use. You may require more than one adaptor.

Socket Type G
(Indonesia) to Plug Type A
(Montserrat (Leeward Islands))

Socket Type G
(Indonesia) to Plug Type B
(Montserrat (Leeward Islands))

Warnings

Voltage

Check if your appliance is compatible with the voltage used in Montserrat (Leeward Islands)

The voltage, 127V, which is present in Indonesia, is significantly different to what's used in Montserrat (Leeward Islands).

Some appliances are compatible with multiple voltages. To find out if your appliance is one of them, check the appliance label and/or instruction booklet. An example appliance label is below.

Appliance label showing a tolerable voltage range of 100 to 240 volts
This appliance is compatible with a range of voltages as it shows two voltage figures with a dash in between them. In this example, the appliance may be plugged into any outlet ranging from 100 to 240V without a voltage transformer, though a socket adaptor would still be needed if the sockets don't match.

See examples of appliance labels

Appliance label showing a voltage of 120 volts
This appliance is only compatible with a single voltage as only one voltage (120V) is printed on the label.
Appliance label showing a tolerable voltage range of 100 to 240 volts
This appliance is compatible with a range of voltages as it shows two voltage figures with a dash in between them. In this example, the appliance may be plugged into any outlet ranging from 100 to 240V without a voltage transformer, though a socket adaptor would still be needed if the sockets don't match.
Appliance label showing two tolerable voltages: 115 volts and 230 volts
This appliance is compatible two voltages as it shows two voltage figures with a slash between them. Appliances displaying labels like this will have a physical switch located on them somewhere, allowing you to switch between the two voltages shown here. In this example, the appliance may be plugged into an outlet of 115V or 240V (provided the switch is in the correct position) without a voltage transformer, though a socket adaptor would still be needed if the sockets don't match.

Is your appliance compatible with the voltage used in Montserrat (Leeward Islands) (230V)?

If your appliance is not compatible with multiple voltages, you will need a transformer to adjust the voltage input when using your appliance in Montserrat (Leeward Islands).

Considerations

Frequency of Electrical Current

The frequency of electrical current found in Indonesia (50Hz) differs to that found in Montserrat (Leeward Islands) (60Hz).

Most equipment is not affected by differences in frequencies. Some exceptions are:

  • Electric clocks: Some electric clocks use the frequency of electrical current to measure time. If the clock is designed for one frequency, but used with another, time shifts could be experienced.
  • Appliances using motors: If there is a motor load associated with an appliance, the frequency governs the speed in revolutions of the motor. This could mean that the motor will spin faster, or slower than intended and could have a detrimental effect in the appliance's operation. This is of particular concern in power tools and other machinery that uses motors, so if you must use these, you should seek access to a frequency converter.

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