Datasheet
Specifications are subject to change without notice (11.01.07) 1
Monitoring Relays
Product Description
• 3-phase monitoring relay for phase
sequence and phase loss
• Detects when all phases are present and have the
c
orrect sequence
•
Measures own power supply
•
Power supply range: 208 to 480 VAC (±15%)
• Output: 5 A SPDT relay (DPA51) or 5 A DPDT relay (DPA71)
normally energized
• For mounting on DIN-rail in accordance with
DIN/EN 50 022
• 17.5 mm (DPA51) or 35.5 mm (DPA71) DIN-rail housing
(DIN 43880)
• LED indication for relay and power supply ON
Type Selection
Mounting Output Supply: 208 to 480 VAC Supply: 208 to 240 VAC Supply: 380 to 480 VAC
DIN-rail SPDT DPA 51 C M44
DIN-rail DPDT DPA 71 D M23 DPA 71 D M48
Input
L1, L2, L3 Terminals L1, L2, L3
Measur
es on own supply
Measuring range
208 to 480 VAC (DP
A51CM44) 177 to 550 VAC
208 to 240 VAC (DPA71DM23) 177 to 275 VAC
380 to 480 VAC (DPA71DM48) 323 to 550 VAC
ON-level > 85% of the phase- phase
voltage
3-Phase Sequence and Phase Loss
Types DPA51, DPA71
Input Specifications
Output SPDT or DPDT relay, N.E.
Rated insulation voltage 250 VAC
Contact ratings (AgSnO
2
)µ
DPA51 (SPDT):
Resistive loads AC 1 5 A @ 250 VAC
DC 12 5 A @ 24 VDC
Small inductive loads AC 15
2.5 A @ 250 VAC
DC 13
2.5 A @ 24 VDC
DPA71 (DPDT)
Resistive loads
AC 1 5 A @ 250 V
AC
Small inductive loads AC 15 3 A @ 250 VAC
DC 13 3 A @ 24 VDC
Mechanical life ≥ 30 x 10
6
operations
Electrical life ≥ 10
5
operations
(at 5 A, 250 V, cos ϕ = 1)
Operating frequency ≤ 7200 operations/h
Dielectric strength
Dielectric voltage
≥ 2 kVAC (rms)
Rated impulse withstand volt.
4 kV (1.2/50 µs)
Output Specifications
3-Phase relay for detection of
incorrect phase sequence,
total and partial phase loss.
Supply range from 208 to 480
VAC covered by three multi-
voltage relay. For mounting
on DIN-rail. Housing 17.5 mm
wide for SPDT version and
35.5 mm for DPDT version,
suitable both for back and
front panel mounting. The
device detects regenerated
voltage up to 85% of the
nominal voltage (phase-
phase).
D
PA51
DPA71
Ordering Key
Housing
Function
Type
Item number
Output
Power supply
DPA 51 C M44