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SOCOMEC - Ref. : 541 612 B

INSTALLATION

Installation must only be carried out by qualified per-
sonnel.
Before installation, disconnect from the power supply.
Connect the device as shown on the diagram below 
(N.B. some optional functions do not need to be cabled).
When installing the device, make the connections 
between the relay and the differential toroid as short as 
possible.
Do not put relay cables or the differential toroid beside 
power conductors.
Do not place differential toroids close to sources of 
intense magnetic fields.

> Note

This differential relay conforms to type A which trips 
sinusoidal alternating currents and pulsed currents, 
whether they are applied suddenly or change slowly. 
This product is also immune to interference.
This relay must be installed in accordance with the 
regulations currently in force.
The device must be checked periodically to see that it 
complies with the regulations.

>

 Test Function

Bargraph blinks

“Trip” LED and “Alarm” relay activated

>

 

Continuous monitoring

Test OK

NO

NO

Toroid input short circuit

NO

NO

Relay/Toroid connection break

YES

NO

>

  

Activation of “Test” button 

(Press (>1s) or external button)

Test OK

YES

YES

Toroid input short circuit

NO

NO

Relay/Toroid connection break

YES

NO

>

 Pre-alarm function

When the measured current exceeds 50% of the thres-
hold value, the pre-alarm relay changes state (if selec-
ted in this mode). Automatic reset to its original state if 
30% lower than pre-set threshold.

>

 Description of front panel

1 - Adjustment/setting I

n

2 -  Green “ON” LED
3 - “RESET” button
4 - Red “TRIP” alarm LED
5 - LED bargraph (% x I

n)

6 -  Configuration DIP switch 

(x 4)

7 - “TEST” push-button
8 - Time setting

•  With I

n set at 30 mA, the timing is set at 0 (instanta-

neous) and can not be modified.

•  The pre-configured factory setting for the device is 30 

mA/0s. These values can be modified as needed for 
operation. A plastic seal is provided with the device 
in order to lock the protective cover and ensure the 
settings.

RESYS M40

EN

Operating instructions 

Earth leakage relay 

A and AC types

>

 Configuration (DIP switch)

Switch

SwitchRelay configuration

A

B

AL1

AL2

0

0

Positive security

Positive security

1

0

Negative security

Pre-alarm (neg. security)

0

1

Negative security*

Positive security*

1

1

Negative security

Pre-alarm (pos. security)

C

Storage mode

1

Automatic reset

0

Storage mode*

D

Toroidal transformer ratio

1

600 : 1 > Socomec* toroid

0

1000 : 1 > other manufacturers

* factory configuration
•  (negative security: relay excited in case of alarm/positive secu-

rity: relay not excited in case of alarm).

TERMINAL CONNECTION DIAGRAM

1  2  3  4  5  6  7

12-125 VDC

230 VAC*

400 VAC

115 VAC* Only

L1

L2

L3

N

PE

A1 (+)

A3

A2 (-)

Alarm 2 (AL2)

or Pre-alarm

Alarm 1

(AL1)

Toroid

rese

t

test

50m maxi

0

8  9  10 11 12 13 14

50m** maxi

* Dual voltage supply only available on 115/230 VAC model. For 

Us = 115VAC, connect the supply to terminals 6 and 7. For the 

other supply options, cable between 5 and 7.
The output relays are shown in the non-excited state (for 

example, as if the auxiliary supply was not present)
The protective earth wire must not pass through the toroid.  For 

single-phase applications, only the phase and the neutral must 

pass through the toroid.
** Cabling: For distances > 1 m, use a twisted pair for connection 

between the relay and the toroid.

>

 Troubleshooting

If the product is not working properly, check that is it properly 

connected.

DIMENSIONS

63.5 mm

44 mm

49.5 mm

30 mm

45 mm

61 mm

85 mm

TECHNICAL SPECIFICATIONS

•  Us supply (5, 6, 7):

 

12 - 125 VDC (85 – 110 % de Us) 

115/230, 400 VAC (85 - 115 % de Us) (see terminal 

connection diagram). All AC supplies are galvanically 

isolated frm toroid, TEST and RESET inputs. 

• Frequency:

 50/60Hz (AC supply)

• Isolation :

 Over-voltage cat. III 

•  Impulse voltage:

 

2,5 kV (115 V AC supply) 

(1,2 kV/ 50 

µ

s) IEC 60664 

4 kV (230 and 400 VAC supply)

•  Consumption (max.) : 

6VA (AC supply) - 5W (DC supply)

•  Measured residual current:

 

0 to 30A (15-400 Hz) (via external toroid with ratio 600:1 

or 1000: 1 connected to terminals 8 and 9)

•  Sensitivity I

n : 

30, 100, 300, 500 mA, 1, 3, 5, 10, 30 A (adjustable)

• Tripping accuracy:

 80 - 90% of I

n

• Reset value:

 ≈ 85% of trip threshold

•  Time delay I

s : 

0*, 60, 150, 300, 500, 800 ms, 1, 4, 10 s 

(adjustable) *time set for “0” or “Instantaneous” < 25 ms 

for residual current @ 5 x I

n.

• Reset time:

  < 2s (after eliminating the auxiliary power 

supply)

•  Indication des Leds :

  

 - Power supply present:

 green

   

-  Bargraph :

 3 green (30, 50 and 70% of the threshold 

value set)

   

- Tripping:

 red 

• Operating temperature:

 -20 to +55° C

• Storage temperature:

 -30 to +70° C

• Relative humidity:

 +95 %

Outputs

-  Number of contacts:

  1 changeover contact relay + 

1 single contact relay

-  Type of contact :  

Alarm 1 (12,13,14)

 

AC1 (250 V) 8 A (2000 VA) 

AC15 (250 V) 2,5 A 

DC1 (25 V) 8 A (200 W) 

Alarm 2 / Pre-alarm (10,11)

 

AC1 (250 V) 6 A (1500 VA) 

AC15 (250 V) 4 A 

DC1 (25 V) 6 A (150 W)

- Lifetime:

  150 000 operations at nominal load

- Dielectric voltage:

 2 kV AC (rms) IEC 60947-1

- Impulse voltage:

 

4 kV (1,2 kV/ 50 µs) IEC 60664

•  Remote Test and Reset (1, 2, 3) :  

With N.O. contact (e.g. push-button) 

Min. contact closure time: 

 80 ms

• Box :

 grey, self-extinguishable, Lexan UL94 VO

• Weight:

 ≈ 190 g (AC) / ≈ 110 g (DC)

•  Mounting:

 on 35 mm symmetrical DIN rail 

(BS5584 :

 

1978 - EN50  002 - DIN 46277-3) 

•  Connecting terminal: 

 2,5 mm

2

 flexible, 

 4 mm

2

 rigid

•  Certification:

  

conforms to IEC 60755, 60947, 61543, 61000-4-2, 

61000-4-3, 61000-4-4, 61000-4-5, 61000-4-6,  

61000-4-12, 61000-4-16.  

CE compliant.

>

 References :

Auxiliary power supply: 

Reference

  12-125 VDC 

4941 

3602

  115/230 VAC 

4941 

3723

  400 VAC   

4941 

3740

> Accessories

Toroids  (C.T.) :

 

IC - Ø 15 mm  

4950 

6015

 

IC - Ø 30 mm  

4950 

6030

 

IC - Ø 50 mm  

4950 

6050

 

IC - Ø 80 mm  

4950 

6080

 

IC - Ø 120 mm  

4950 

6120

 

IC - Ø 200 mm  

4950 

6200

 

IC - Ø 300 mm  

4950 

6300

Use of toroids ≥ 120 mm: setting I

n min = 300 mA

Other toroids: consult us

RESYS

 058 

B

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