(GXDQ-DW45QY) Series Trip Unit Manual V 8.0

(GXDQ-DW45QY) Series Release Bearing Accessories Instruction Manual V 8.0

1. Product Usage Product uses

This electromagnetic undervoltage release is primarily suitable for DW45 Intelligent universal circuit breaker. It features undervoltage instantaneous tripping, time‑delay tripping, and zero‑voltage time‑delay tripping functions. The time‑delay portion is entirely… 6 It is composed of DIP switches, and the delay time can be accumulated by summing the delay times corresponding to the selected switch positions, allowing for a total of… 63 The delay tripping time for different delay settings.

This electromagnetic undervoltage release device is mainly applicable to DW45 intelligent universal circuit breakers. It has the functions of instantaneous, delayed, and zero-voltage delayed tripping under undervoltage conditions. The delay part consists of 6 digit dials, and the delay time can be accumulated by adding up the durations of each dial position. A total of 63 different delay values can achieve delayed tripping times.

2. Working principle Working principle

GXQ (Enterprise Standard) The series of self‑priming undervoltage controllers (hereinafter referred to as trip units) are available in the following specifications: Assisted-suction low-pressure instantaneous type, self-priming Instantaneous undervoltage type, Self-priming Undervoltage delay type, Self-priming Zero-pressure (pressure-loss) delayed-type, Self-priming Photovoltaic (HPv) It consists of two parts: a control circuit board and an electromagnet.

     The GXQ (Enterprise Standard) series of self-priming undervoltage controllers (hereinafter referred to as trip devices) are available in the following specifications: suction type undervoltage instantaneous, suction type undervoltage momentary, suction type undervoltage delayed, suction type zero voltage (power loss) delayed, and suction type photovoltaic (HPv). They consist of a control circuit board and an electromagnet.

The assist-suction undervoltage control circuit consists of a freewheeling diode half-wave rectifier, which provides current to the coil. The “continuous conduction” path (at the moment of interruption) eliminates the reverse voltage generated by the coil in the shortest possible time. The overall operating process is as follows: when the input voltage reaches… 85% ~ 110%Ue At that time, the moving iron core is assisted by a spring leaf mounted on the mechanism’s pivot shaft to engage and hold securely, ensuring reliable closing and opening of the circuit breaker. When the input voltage drops to… 35% ~ 70%Ue A circuit breaker that can reliably trip.

The suction-assisted undervoltage controller circuit consists of a freewheeling diode half-wave rectifier circuit, providing a 'continuous conduction' path for the current in the coil (at the moment of disconnection), eliminating the reverse voltage generated by the coil in the shortest possible time. The operation process of the whole machine is as follows: when the input voltage reaches 85% to 110%Ue, the moving iron core is pushed together and reliably held through the spring piece installed on the mechanism shaft, ensuring reliable closing and opening of the circuit breaker. When the input voltage drops to 35% to 70%Ue, the circuit breaker opens reliably.

Self-priming negative pressure The control circuit board comprises an anti-interference circuit, a power supply circuit, a sampling circuit, a delay‑setting circuit (with DIP switches), a drive circuit, and a microcontroller circuit, among others. The overall operating sequence is as follows: when the input voltage reaches… 30%Ue to ensure stable operation of the control circuit board. When the input voltage reaches 85%Ue At this point, the microcontroller outputs a closing command to energize the electromagnet, thereby preparing the circuit breaker’s main contacts for closing. When the input voltage drops to… 50%Ue Time ( Photovoltaic HPv Type is 20%) , the microcontroller issues an instantaneous trip or time-delayed trip command, causing the electromagnet to release and trip, thereby opening the circuit breaker’s main contacts. At the set… 95% During the delay period, if the supply voltage returns to its normal level, the undervoltage release will remain inactive, maintaining normal operating conditions. All models in the series feature a self‑energizing function, eliminating the need for auxiliary energizing devices.

The self-priming undervoltage control circuit board consists of an anti-interference circuit, a power supply circuit, a sampling circuit, a delay setting circuit (dial), a drive circuit, and a single-chip microcomputer circuit. The working process of the whole machine is as follows: when the input voltage reaches 30%Ue, the control circuit board starts to work stably. When the input voltage reaches 85%Ue, the single-chip microcomputer outputs a suction command to make the electromagnet attract, preparing the main contact of the circuit breaker for closing. When the input voltage drops to 50%Ue (20% for photovoltaic HPv type), the single-chip microcomputer issues an instantaneous or delayed tripping command to release the electromagnet from its catch, thereby disconnecting the main contact of the circuit breaker. If the working voltage recovers to normal within the set 95% delay time, the undervoltage tripper does not act and remains in a normal working state. All series of trip devices have self-priming functions and do not require additional suction assistance devices.

3. Performance Metrics Performance metrics

3.1 Rated voltage ( Ue ): AC110V、AC220V ( 230V ), AC380V(400V) ( 50/60Hz )

DC24V、DC48V、DC60V、DC110V、DC220V (Customizable upon request)

     3.1  Rated Voltage (Ue): AC110V, AC220V (230V), AC380V (400V) (50/60Hz)

DC24V, DC48V, DC60V, DC110V, DC220V (customizable)

3.2 Product Model and Function Description:

3.2  Product model and function description:

3.2.1 Suction-assisted underpressure: ① ≤ 35%Ue The trip unit does not engage. 85%Ue Spring-plate assisted Attraction, (Internal Control) 50%Ue Instantaneous disconnection on both sides.

3.2.2 Assisted suction undervoltage: ① The release device does not engage at ≤ 35% Ue, the spring plate boosts engagement at 85% Ue, and it momentarily disconnects at around 50% Ue (internal control).

3.2.2 M Type: ≤ 35%Ue The trip unit does not engage. 85%Ue Automatic latching, 50%Ue Instantaneous disconnection on both sides.

3.2.2  Type M: ≤ 35% of the Ue release device does not engage, 85% engages automatically, and around 50% disengages instantaneously.

3.2.3 H1 Type: ① possessing M Trip unit function.

② There is 0.3~10.5s Delay function, with adjustable delay time. 63 A combination of species.

③ Undervoltage in 35%~75%Ue In this state, the delay time is set via the DIP switch to implement the delayed tripping function.

④ Return time ≥ 95% , that is, the delay time 95% It returns to normal voltage without tripping. 。

3.2.3  Type H1: ① Equipped with the M-type release mechanism.

② It has a delay function of 0.3 to 10.5 seconds, and the delay values can be combined into 63 different combinations.

③ The under-voltage trip function is completed by setting the delay time according to the dial code when the voltage drops between 35% and 75% Ue.

④ The return time is ≥ 95%, meaning that the normal voltage will not trip within 95% of the delay time.

 

3.2.4 H Type: ① possessing M Type and H1 All functions of the model.

② There is 0.3~7.5 s Delay function, with adjustable delay time. 63 A combination of types.

    ③ Zero‑pressure delay function (in the event of a power outage, the trip unit delays tripping).

④ Returnable time ≥ 95% , that is, the delay time 95% It returns to normal voltage without tripping.

3.2.4  Type H: ① It has all the functions of Type M and Type H1.

② It has a 0.3 to 7.5 second delay function, and there are 63 possible combinations for the delay value.

③ Zero-voltage delay function (the circuit trips after the power grid is powered off).

④ The return time is ≥ 95%, meaning that the voltage returns to normal within 95% of the delay time without tripping.

3.2.5 HPv Type: ① possessing M Type 、H1、 H All functions of the model.

② There is 0.3~ 10 .5 s Delay function, with adjustable delay time. 63 A combination of species.

③ 20%Ue Time-delay tripping function.

3.2.5  HPv type: ① It has all the functions of type M, H1, and H.

② It has a delay function of 0.3 to 10.5 seconds, with 63 possible combinations for the delay value.

③ A 20% Ue delay tripping function.

3.3 Temperature Rise: The electromagnetic trip coil of the trip unit is permitted to rise in temperature. 110K , other parts 60K。

3.3 Temperature Rise: The electromagnetic release coil of the release device allows a temperature rise of 110K, while other parts can withstand up to 60K.

3.4 Dielectric performance: The trip unit shall be able to withstand alternating current. 50Hz 2500V/1min Power-frequency withstand voltage test: no breakdown or flashover shall occur (please remove the control board during testing).

3.4 Dielectric Performance: The release device should be able to withstand an AC 50Hz, 2500V/1minute power frequency withstand voltage test without breakdown or flashover (remove the control board during testing).

3.5 Trip unit travel ≥ 7mm , tripping force ≥ 10N。

3.5  The trip of the release mechanism is ≥ 7 mm, and the releasing force is ≥ 10 N.

3.6 Time Delay Setting and Operating Characteristic Table

3.6  Delay Time Setting and Action Feature Table

Product Type Product type	DIP switch positions and their corresponding delay values Dialing Mode and Corresponding Delay Value						Combination Range Combination range Delay time Delay time	Margin of error error range
	1	2	3	4	5	6
H1 Type Type	0.3	0.5	0.7	1	3	5	0.3 ~ 10.5s	±15%
H Type Type	0.3	0.5	0.7	1	2	3	0.3 ~ 7.5s
HPv Type Type	0.3	0.5	0.7	1	3	5	0.3 ~ 10.5s
Note: The delay time is the sum of the delay times for each selected setting (customizable for special timing requirements). Remarks: The delay time is the sum of the delay times for each assigned gear level (customizable for special time requirements).

4. Use and Maintenance Use and Maintenance

4.1 Insert the two pins on the trip unit control box housing into the two circular holes of the circuit breaker, secure the trip unit’s solenoid to the circuit breaker, and tighten the mounting screws. After carefully verifying that the connection terminals are making reliable contact, energize the system.

4.1  Insert the two pins on the control box housing of the release device into the two round holes of the circuit breaker. Fix the electromagnet of the release device to the circuit breaker and tighten the mounting screws. After carefully checking that the connecting cliphead makes reliable contact, energize the circuit breaker.

4.2 The trip unit’s power supply must be securely connected, and arcing during energization is not permitted. To resolve the issue, disconnect the power at the trip unit’s input terminal once, then re-energize it to restore normal operation.

4.2 The power supply of the release device must be reliably connected, and there should be no momentary power surges. You can turn off the power at the front end of the release device once and then power it on again to restore normal operation.

4.3 The operating power supply of the trip unit shall comply with national electrical standards. For facilities experiencing abnormal frequency fluctuations or significant harmonic interference—particularly in applications involving medium-frequency furnaces—please notify our company so that we may discuss and resolve the issue.

4.3 The operating power supply of the disconnector shall comply with national electrical standards. For installations experiencing abnormal frequency fluctuations and significant harmonic interference—particularly in scenarios involving medium-frequency furnaces—please notify our company and address the issue through consultation.

5. Ordering Instructions Ordering Instructions

When placing an order, the user shall specify the trip unit’s model, rating, rated voltage, delay time, and other relevant parameters.

When placing an order, users should specify the model, specification, rated voltage, delay time, etc., of the disconnector.

6. Customer Usage Guidelines Customer Instructions

The undervoltage module must be used as a matched set; do not interchange it with other components (undervoltage controller and electromagnet) unless absolutely necessary.

The undervoltage module must be used in conjunction with the overvoltage module. Do not interchange them unless necessary (undervoltage controller and electromagnet).

When the undervoltage controller and the electromagnet are disconnected, do not apply power for testing (otherwise the electronic circuitry may be damaged).

The undervoltage controller and electromagnet should not be energized for testing when they are not connected (otherwise, the electronic circuit will be burned).

The energization time of the undervoltage release must reach 10s , in order to ensure the reliability of the delay time.

The energization time of the undervoltage release device must reach 10 seconds to ensure the reliability of the delay time.

This undervoltage release incorporates a voltage‑drop capacitor internally. Due to factors such as service life, storage conditions, and operating environment, the capacitor experiences varying degrees of natural aging (an inherent characteristic of energy‑storage components). When this degradation accumulates to a certain level, the device may exhibit unreliable make‑and‑break performance. To ensure reliable operation, please perform a functional test before putting the product into service after prolonged storage, and conduct regular maintenance at intervals not exceeding… 12 Conduct on-off power tests for (X months).

The under-voltage release device is equipped with a voltage-drop capacitor inside. Due to factors such as the duration of use, storage conditions, and operating conditions, the capacitor undergoes natural degradation to varying degrees (this is a inherent characteristic of energy storage components). When the degradation reaches a certain level, the device may become unreliable in performing its functions. To ensure reliable operation of the device, it is necessary to perform power-on/off tests after the device has been stored for a long period of time before use, as well as during regular maintenance (it is recommended that the maintenance interval does not exceed 12 months).

The undervoltage release incorporates a voltage‑drop capacitor. Due to factors such as service life, storage conditions, and operating environment, the capacitor experiences varying degrees of natural aging—a characteristic inherent to energy‑storage components. When this degradation accumulates to a certain level, the device may exhibit unreliable make‑and‑break performance. To ensure reliable operation, perform on/off‑cycle tests before putting the product into service after prolonged storage and during scheduled maintenance.

The under-voltage release device is equipped with a voltage drop capacitor inside. Due to factors such as the duration of use, storage conditions, and operating conditions, the capacitor undergoes natural degradation to varying degrees (a inherent characteristic of energy storage components). When the degradation reaches a certain level, the device may become unreliable in its function of releasing the mechanism. To ensure reliable operation of the device, it is necessary to perform testing for power-on and power-off conditions after the device has been stored for a long time, as well as during regular maintenance.

The warranty period for the quality of the undervoltage time-delay trip device is 12 For a period of one month, the product warranty covers only the trip unit itself and does not extend to any consequential indirect losses arising therefrom.

The quality warranty period for the under-voltage delay release device is 12 months. The warranty coverage applies only to the device itself; it does not cover any indirect losses that may result from its use.

                                                        

 

 

Jiangsu Guoxing Electrical Appliance Co., Ltd.

Jiangsu Guoxing Electric Co., Ltd.

2026