Product designation				Pump protection relays
Product type designation				PMA50
General characteristics
Description				Pump protection relay (motor under-load and over-current control) monitoring for max AC current, min cosϕ, phase loss and incorrect phase sequence
Type of system				Single-phase and three-phase
Power supply
Auxiliary supply voltage Us				380…415VAC
Operating voltage range				0.85…1.1 Us
Rated frequency			Hz	50/60 ±5%
Power consumption Max			VA	4.5
Power dissipation Max			W	2.3
Control circut
Rated current (Ie)			A	5 or 16
Overload capacity				5Ie for 1s - 160A for 10ms - Constant 16A
Connection				Direct or by current transformer
Current set-point (% Ie)
		Max	%	10…100
Minimum cospϕ set-point				0.1…0.99
Tripping delay			s	0.1…10
Automatic resetting delay			min	OFF…100
Resetting hysteresis			%	3% for overcurrent, 0.03 for cosϕ
Inhibition time			s	1…60
Type of reset				Automatic or manual
External input				Consent input for running/resetting
Repeat accuracy			%	±1 (with constant parameters)
Tripping time for phase loss			ms	60
Voltage inputs
Measurement range			V	80…660VAC
Frequency range			Hz	50/60 ±5%
Relay outputs
Number of relays			Nr.	1
Relay state				Normally energised De-energises at tripping
Contact arrangement				1 changeover SPDT each
Rated operational voltage AC (IEC)			VAC	250
Maximum switching voltage			VAC	400
IEC Conventional free air thermal current Ith			A	8
UL/CSA and IEC/EN 60947-5-1 designation				B300
Electrical life (with rated load)			cycles	100000
Mechanical life			cycles	30000000
Functions
Modular version				3U
Maximum AC current				Yes
Minimum cosϕ for dry running pump protection				Yes
Phase loss				Yes
Incorrect phase sequence				Yes
Indications
Indication				1 green LED for power on / Inhibition and 2 red LEDs for tripping
Connections
Tightening torque for terminals
		max	Nm	0.8
		max	Ibin	7
Conductor cross section
	AWG/Kcmil
		min	AWG	24
		Max	AWG	12
	IEC
		min	mm²	0.2
		Max	mm²	4
Insulations
Rated insulation voltage Ui			V	600
Rated impulse withstand voltage Uimp			kV	6
Operating frequency withstand voltage			kV	2.5
Ambient conditions
Temperature
	Operating temperature
		min	°C	-20
		max	°C	+60
	Storage temperature
		min	°C	-30
		max	°C	+80
Housing
Execution (n° of modules)				3
Material				Self-extinguishing polyamide
Mounting				Modular DIN 43880 housing
IEC degree of protection				IP40 on front; IP20 at terminals
Dimensions (W x H x D)			mm	53.5 x 104.7 x 64.9
Weight			g	251
ETIM classification
ETIM 8.0				EC001440 - Current monitoring relay

Documents

22 - Monitoring relays (eng)

Protection relays PM series (eng)
PD050GB09_09

Pump protection relay for motor under-load and over-current monitoring PMA50 (eng)
I235IGBFE05_20

FAQ for monitoring relays (eng)
F065IGB11_21

Certifications

cULus
EAC

Conformity

IEC/EN 60255-5
IEC/EN 61000-6-2
IEC/EN 61000-6-3
UL 508
CSA C22.2 n° 14

Products > Monitoring relays

PMA50A415

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Pump protection relay for single and three-phase systems, maximum AC current and minimum COSΦ. Phase loss and incorrect phase sequence, 5A or 16A

Type of product: Pump protection relays
Type of system: Single-phase and three-phase
Number of relays: 1
Rated supply voltage: 380...415VAC
Rated current (Ie): 5 or 16
Programming mode: Potentiometers

Order code	PMA50A415
Weight [g]	280
Qty. per package	1
Multiple qty. of packs per order	1
Package dimensions [mm]	095X055X075
Volume [cm³]	391.875
Bar code [EAN13]	8013975172858
HS Code	85364900

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PMA50A415