2-1
Meter Type Terminal Type and Profile Dimensions
CT Current Square 8.5 mm x 8.0 mm
CT Current Round 9.0 mm Ø
Whole Current Current Square 8.5 mm x 9.0 mm
Whole Current Current Round 9.0 mm Ø
All Voltage 3.0 mm Ø
• Table 2-5 Terminal sizes
New Terminal Block
There is an updated terminal block design. This provides shrouding for the current
terminals, numbering on all terminals, external VT to CT links (instead of internal
links), and an optional finger guard. The terminal spacing and locations are unchanged.
Figure 2-11 shows the new layout.
• Figure 2-11 New style terminal block of the meter
Finger Guard
An optional finger guard may be fitted over the TB2 terminal screws in meters fitted
with the new style terminal block. This can help prevent accidental contact with the
supply voltage, as well as allowing these connections to be sealed.
• Figure 2-12 The finger guard in place
Terminal Cover Tamper Detect
The Mk10A meter has an optional switch that can detect the opening of the terminal
cover. It is located above the battery connector. The meter can generate an EFA alarm
2-10 EDMI Atlas Hardware Reference Manual
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