KST explosion-proof electric actuators are suitable for hazardous environments where flammable gases may be present.
They comply with multiple international standards including GB3836.1-2010, GB3836.2-2010, EN/IEC60079-0, EN/IEC60079-1, EN/IEC60079-31, EN ISO/IEC80079-36, and EN ISO/IEC80079-37.
Flameproof enclosures are designed to contain internal explosions without allowing the flame to escape and ignite the surrounding explosive atmosphere.
The flameproof enclosure uses a robust flame path design that ensures a long contact surface area between joint faces, preventing ignition through the housing gaps.
This allows equipment to operate safely and reliably in explosive environments.
KST explosion-proof actuators meet the following structural and explosion-proof requirements:
Electric motor
Electrical components
Terminal block
The KST-Ex05 is an intelligent, explosion-proof electric actuator designed for controlling valves in hazardous environments. It features robust flameproof construction to prevent ignition in explosive atmospheres, making it ideal for industries like oil and gas, chemical processing, and mining. With a torque range of 50–2000 Nm and various motion angles (up to 270°), it offers reliable operation. Additionally, it includes a visual valve position indicator, manual override via a handwheel, and options for remote control, ensuring enhanced safety and efficiency.
Technical Parameters
| Parameter | Specification |
| Output Torque | 50–1000 N·m |
| Output Angle | 90° ±1° (optional 270°) |
| Applicable Voltage | Single phase: 110–120V / 220–240V ACThree-phase: 380VAC/DC 24V |
| Applicable Frequency | 50/60 Hz |
| Environmental Temperature | -25°C to +60°C |
| Working Hours | Switch type: S2-15 minAdjustment type: S4-50% |
| Relative Humidity | <95% RH |
| Working Environment | No strong corrosive, flammable, or explosive media |
| Control Signal | Switch type: On/Off controlAdjustment type: 4–20 mA (optional 0–10V / 2–10V with optical isolation) |
| Feedback Signal | Switch type: SPDT (5A @250VAC, active/passive)Adjustment type: 4–20 mA (optional 0–10V / 2–10V with optoelectronic isolation) |
| Protection Level | IP67 (default), optional IP68 |
| Electric Insulation Level | F-grade (optional H-grade) |
| Service Life | >20,000 cycles (based on JB/T 8862-2014) |
Exd II CT5 Gb
Explanation of Marking:
d: Flameproof type
II: Non-mining electrical equipment
C: Suitable for gas environments in explosive area classification IIC (highest gas group)
T6: Max surface temperature does not exceed 135°C
Gb: Equipment protection level (high level of protection for gas environments)
Application Recommendations
The KST-Ex05 explosion-proof electric actuator is ideal for industries where hazardous, explosive atmospheres are present. It excels in oil and gas facilities, chemical processing plants, and mining operations, where safety and precision are paramount. This actuator is perfect for controlling ball, butterfly, and other quarter-turn or multi-turn valves. It can be used in remote locations, offering manual override and real-time feedback, which is essential in environments requiring constant monitoring. Its durability and intelligent features make it suitable for critical applications, ensuring reliable performance even in extreme conditions, while complying with international safety standards.
KST explosion-proof electric actuators are suitable for hazardous environments where flammable gases may be present.
They comply with multiple international standards including GB3836.1-2010, GB3836.2-2010, EN/IEC60079-0, EN/IEC60079-1, EN/IEC60079-31, EN ISO/IEC80079-36, and EN ISO/IEC80079-37.
Flameproof enclosures are designed to contain internal explosions without allowing the flame to escape and ignite the surrounding explosive atmosphere.
The flameproof enclosure uses a robust flame path design that ensures a long contact surface area between joint faces, preventing ignition through the housing gaps.
This allows equipment to operate safely and reliably in explosive environments.
KST explosion-proof actuators meet the following structural and explosion-proof requirements:
Electric motor
Electrical components
Terminal block
The KST-Ex05 is an intelligent, explosion-proof electric actuator designed for controlling valves in hazardous environments. It features robust flameproof construction to prevent ignition in explosive atmospheres, making it ideal for industries like oil and gas, chemical processing, and mining. With a torque range of 50–2000 Nm and various motion angles (up to 270°), it offers reliable operation. Additionally, it includes a visual valve position indicator, manual override via a handwheel, and options for remote control, ensuring enhanced safety and efficiency.
Technical Parameters
| Parameter | Specification |
| Output Torque | 50–1000 N·m |
| Output Angle | 90° ±1° (optional 270°) |
| Applicable Voltage | Single phase: 110–120V / 220–240V ACThree-phase: 380VAC/DC 24V |
| Applicable Frequency | 50/60 Hz |
| Environmental Temperature | -25°C to +60°C |
| Working Hours | Switch type: S2-15 minAdjustment type: S4-50% |
| Relative Humidity | <95% RH |
| Working Environment | No strong corrosive, flammable, or explosive media |
| Control Signal | Switch type: On/Off controlAdjustment type: 4–20 mA (optional 0–10V / 2–10V with optical isolation) |
| Feedback Signal | Switch type: SPDT (5A @250VAC, active/passive)Adjustment type: 4–20 mA (optional 0–10V / 2–10V with optoelectronic isolation) |
| Protection Level | IP67 (default), optional IP68 |
| Electric Insulation Level | F-grade (optional H-grade) |
| Service Life | >20,000 cycles (based on JB/T 8862-2014) |
Exd II CT5 Gb
Explanation of Marking:
d: Flameproof type
II: Non-mining electrical equipment
C: Suitable for gas environments in explosive area classification IIC (highest gas group)
T6: Max surface temperature does not exceed 135°C
Gb: Equipment protection level (high level of protection for gas environments)
Application Recommendations
The KST-Ex05 explosion-proof electric actuator is ideal for industries where hazardous, explosive atmospheres are present. It excels in oil and gas facilities, chemical processing plants, and mining operations, where safety and precision are paramount. This actuator is perfect for controlling ball, butterfly, and other quarter-turn or multi-turn valves. It can be used in remote locations, offering manual override and real-time feedback, which is essential in environments requiring constant monitoring. Its durability and intelligent features make it suitable for critical applications, ensuring reliable performance even in extreme conditions, while complying with international safety standards.
