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BISTABLE RELAY 4028682

 

INSTRUCTION MANUAL

Malmbergs Elektriska AB, PO Box 144, SE-692 23 Kumla, SWEDEN   

Phone: +46 (0)19 58 77 00     Fax: +46 19 57 11 77     [email protected]     www.malmbergs.com

APPEARANCE

The device is designed for 
single-phase installation and 
must be installed in accor-
dance with standards valid 
in a particular country. The 
device should be connected 

according to the details included in this ope-
rating manual. Installation, connection and 
control should be carried out by a qualified 
electrician staff, who act in accordance with 
the service manual and the device functions. 
Disassembling of the device is equal with 
a loss of guarantee and can cause electric 
shock. Before installation make sure the con-
nection cables are not under voltage. The 
cruciform head screwdriver 3,5 mm should 
be used to instal the device. Improper trans-
port, storage, and use of the device influence 
its wrong functioning. It is not advisable to 
instal the device in the following cases: if any 
device part is missing or the device is dama-
ged or deformed. In case of improper func-
tioning of the device contact the producer.

CAUTION

FEATURES

TECHNICAL DATA

DESCRIPTION

4028682

Input (supply) terminals: -/~ , +/~

Input rated voltage: 24 V AC/DC

Input voltage tolerance: from -15 to +10 %

Nominal frequency:  50 / 60 Hz

Rated power consumption: 20 mA

Supply voltage control indicator: green LED diode

Release terminals: IN, IN, IN

Release control current: 200 µA

Output relay optical signalization: red LED diode

Relay operating indicator: TEST button

Output relay parameters: 1NO - 16 A / 250 V AC1 4000 VA

Number of terminal clamps:  8

Section of connecting cables:  from 0,2 to 2,50 mm

2

Ambient temperature range: from -20 to +45 

o

C

Operating position: freely

Mounting: rail TH 35 (EN 60715)

Protection degree: IP20 (EN 60529)

Protection level:  II

Overvoltage category: II

Pollution degree: 2

Rated impulse withstand voltage: 1 kV (EN 61000-4-5)

Dimensions: monomodular (17,5 mm) 90x17,5x66 mm

Weight: 0,078 kg

Reference standards: EN 60669-1; EN 60669-2-1

EN 61000-4-2,3,4,5,6,11

•  Bistable lighting control Input rated in-

dicator – LED green,

•  relay mode indicator – LED red,
•  system releasing from the L/N or +/- li-

nes,

•  TEST function,
•  double-wire controll installation,
•  voltage relay output - one NO (normal 

closed) contact max 16 A capacity

•  monomodular casing TH35 DIN rail in-

stallation.

The bistable (impulse) relay 4028682  

is used to control lighting or other devices 
by means of monomodular pushbuttons 
connected in a parallel way. Pushing any 
button causes switching on or switching 
off the devices connected to output termi-
nals. Using this system gives the possibility 
of creating “intelligent” lighting control 
systems.

Output (load)  
terminals (11, 11, 14)

TEST button

Output relay indicator

Supply voltage indicator

Input supply terminal (-/~)

Release terminals

(IN, IN, IN)

Input supply terminal (+/~)

MOUNTING, FUNCTIONING

1.  Disconnect the power supply from the 

mains by the phase fuse, the circuit-

-breaker or the switch-disconnector 

that are joined to the proper circuit,

2.  Check if there is no voltage on con-

nection cables by means of a special 

measure equipment,

3.  Install 4028682 device in the switchbo-

ard on TH-35 DIN rail,

4.  Connect the cables with the terminals 

according to installing diagram,

5.  Switch on the power supply from the 

mains,

6.  Push the TEST button several times to 

check the relay operation correctness.

The device is ready to work after swit-

ching on power supply. The relay opera-

tion correctness can be checked by pu-

shing the TEST button placed on the front 

panel. The system should switch on and 

off the load connected to its output termi-

nals. Mono modular pushbuttons can be 

connected in a paralell way which enables 

the lighting control from different places.

APPLICATION

CONNECTION

DIMENSIONS

Typical application:

The bistable (impulse) relay operating the 

staircase lighting (e.g. indoor lighting) are con-
trolled by means of mono modular pushbut-
tons that can be connected in a parallel way. 
The buttons can be placed in different places 
which gives the possibility of creating univer-
sal lighting systems control. The bistable relay 
cooperates with time relay PCM-04 (with set-
-ups: MODE=F, TIME=3, RANGE=2) and the 
same gives additional function the central bi-
stable relay switch off (reset) by momentary 
power cut.

TIME COURSE

RELAY CAPACITY

INNER DIAGRAM

t

IN

t

t

U

T

11 14

11

IN

IN

IN

CENTRAL RELAY 

RESET

LOCAL

CONTROL

DC: +/- 

AC:  /

DC: +/- 

AC:  /

DC: +/- 

AC:  /

DC: +/- 

AC:  /

-/

+/

DC: +/- 

AC:  /

-/

+/

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