Monitoring Relays
1-Phase AC/DC Over Current
Types DIA01, PIA01
• AC/DC over current monitoring relay
• Current measured through internal shunt
• Measuring range 0.5 to 5 A AC/DC
• Adjustable current limit on relative scale
• Adjustable hysteresis
• Programmable latching at set level
• Output: 8 A SPDT relay normally de-energized
• For mounting on DIN-rail in accordance with DIN/EN
50 022 (DIA01) or plug-in module (PIA01)
• 22.5 mm Euronorm housing (DIA01) or 36 mm plug-in
module (PIA01)
• LED indication for relay and power supply ON
• Galvanically separated power supply
DIA01
PIA01
Product Description
DIA01 and PIA01 are precise maintained.
Ordering Key
Housing
DIA 01 C B23 5A
AC/DC over current monitor- The red LED indicates the Function
ing relays. Direct measuring relay status. Through the Type
or through current transformer. built-in shunt it is possible to Item number
Owing to the built-in latch monitor loads up to 5 A Output
function, the ON-position of AC/DC.
the relay output can be
Power supply
Range
Type Selection
Mounting
Output
Supply: 24 VDC
Supply: 24/48 VAC
Supply: 115/230 VAC
DIN-rail
Plug-in
SPDT
SPDT
DIA 01 C 724 5A
PIA 01 C 724 5A
DIA 01 C B48 5A
PIA 01 C B48 5A
DIA 01 C B23 5A
PIA 01 C B23 5A
Input Specifications
Output Specifications
Input (current level)
DIA01: Terminals Y1, Y2
PIA01: Terminals 5, 7
Output
Rated insulation voltage
Contact ratings (AgSnO2)
Resistive loads
SPDT relay
250 VAC
Measuring ranges
Direct
µ
Internal resistance: 0.05 Ω
Max. current: 6 A
Max. current for 1 s: 25 A
AC 1
DC 12
8 A @ 250 VAC
5 A @ 24 VDC
2.5 A @ 250 VAC
2.5 A @ 24 VDC
≥ 30 x 106 operations
≥ 105 operations
Small inductive loads AC 15
DC 13
Standard CT (examples)
AACrms
Max. curr.
60 A
180 A
TADK2
TAD2
TAD6
TAD12
TACO200
50 A/5 A
150 A/5 A
400 A/5 A
1000 A/5 A
6000 A/5 A
5 to 50 A
15 to 150 A
40 to 400 A
Mechanical life
Electrical life
480 A
100 to 1000 A 1200 A
600 to 6000 A 7200 A
(at 8 A, 250 V, cos ϕ = 1)
Operating frequency
Dielectric strength
Dielectric voltage
≤ 7200 operations/h
Contact input
DIA01
PIA01
Disabled
Enabled
Terminals Z1, Y1
Terminals 8, 9
> 10 kΩ
≥ 2 kVAC (rms)
Rated impulse withstand volt. 4 kV (1.2/50 µs)
< 500 Ω
Latch disable
> 500 ms
Note:
The input voltage cannot
raise over 300 VAC/DC with
respect to ground (PIA only)
Specifications are subject to change without notice (21.10.00)
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