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The product is intended for specialists and requires qualified and authorized personnel. The product does not include assembly/use instructions . Putting the product into operation by unqualified persons leads to the loss of the warranty according to the Terms and Conditions on the site.
The specified technical parameters (current, power, etc.) represent maximum allowable values under ideal operating conditions. For safe use and optimal lifespan, it is recommended to operate the product continuously at no more than 50% of the specified maximum values.
Motor Overload Protection Module, 6-28V, 5A, PWM DC
It protects DC motors and circuits powered by 6-28V against overcurrent, short circuit and motor stall, also compatible with PWM control. It allows adjustment of the current threshold and trip delay, operates in automatic mode with timed reset or manually via jumper, and the power and alarm LEDs provide quick diagnosis.
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Current (overcurrent) protection module, GZ03, ideal for protecting DC-powered circuits against overcurrent, short circuits and motor blocking.
The module is specifically usable with DC motors and also supports motors powered by PWM signals.
It offers automatic or manual protection and allows setting of essential parameters such as current limit, trip delay time and reset time. It is equipped with status LEDs for power and alarm signaling, facilitating quick monitoring of the system status.
It accepts inductive or resistive loads but with different maximum current (8A maximum for resistive loads, 5A maximum for inductive loads such as motors).
It has an Automatic reset function, meaning that when an overcurrent condition is detected, the timer will be triggered and the power will be restored after the time set in the potentiometer. It can be used in manual mode (via jumper), which requires manual reset after the overcurrent has been detected.
It also allows setting the delay on disconnection (potentiometer marked with delay time or overload sensitivity). Depending on how it is set, the protection is activated with a certain delay after the overcurrent condition above the set limit is detected.
Specifications:
Supply voltage: 6V – 28V DC
Maximum current (resistive load): 8A
Maximum current (inductive load / motor): 5A
Current limitation: adjustable 0.2A – 10A
Protection delay time: adjustable 0 – 20 seconds
Reset time (automatic mode): 1 – 600 seconds
Operating modes: Automatic / Manual (selectable via jumper)
LED indicators: Power LED & Overcurrent alarm LED
Dimensions: 32mm x 50mm x 15mm
Use:
Caution! Make sure the power is off before connecting. Do not reverse the polarity of the power wires as this may damage the device!
Connect the wires according to the connection diagram (see image).

Select the desired operating mode via jumper:
AUTO (automatic mode – automatic reset)
MANUAL (manual mode – reset by button)
Adjust the potentiometers for:
Trigger delay time
Maximum allowed current limit
Reset time (automatic mode only)
Turn on the power.
In case of tripping (red LED on), eliminate the cause of the overcurrent. Auto mode will reset automatically. In manual mode, press the reset button or turn the power off and on again.
Package contents:
1 x GZ03 electronic protector for DC overcurrent
Produs destinat utilizarii in proiecte electronice, automatizari, prototipare, educatie si cercetare.
Produsul trebuie utilizat numai conform specificatiilor tehnice mentionate in descriere si/sau in documentatia produsului.
Avertismente generale de siguranta:
Nu utilizati produsul la tensiuni, curenti sau temperaturi peste valorile specificate.
Montajul si conectarea trebuie realizate de persoane cu cunostinte tehnice minime in domeniul electric/electronic.
Evitati scurtcircuitele, inversarea polaritatii si conectarea gresita a alimentarii.
Nu lasati produsul alimentat nesupravegheat in timpul testelor.
Produsul nu este jucarie si nu este destinat copiilor.
Pentru modulele electronice, se recomanda utilizarea in carcase, panouri sau montaje protejate, dupa caz.
Identificare produs:
Denumirea produsului, codul/SKU-ul si caracteristicile tehnice sunt mentionate in pagina produsului si/sau pe eticheta ambalajului.
Producator / Importator / Distribuitor:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Website: www.sigmanortec.ro
Persoana responsabila in UE:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Documentatie si siguranta:
Pentru informatii suplimentare, fise tehnice, declaratii de conformitate sau instructiuni, ne puteti contacta la [email protected].