CH1290 Explosion Proof Isolating Switch

Technical Data

1.Explosion-proof Type

• Standards Implemented: Ex d eb, Ex t b
• Applicable Hazardous Areas: Gas Zone 1, Zone 2; Dust Zone 21, Zone 22
• Ex Marking: Gas protection: Ex d eb ⅡC T6 Gb / Ex t b ⅢC T80℃ Db；Ex d eb ⅡC T5 Gb / Ex t b ⅢC T95℃ Db

2. Product Parameters

Switching Capacity (A) AC-3				Terminal Cross-sectional Area (mm²)	Cable Entries & Exits	Cable Outer Diameter (mm)	Explosion-proof Marking	Protection Class	Anti-corrosion Grade
AC230V	AC400V	AC500V	AC690V
25	25	20	16	2×6	2×M25、1×M20(3P) 4×M25、1×M20(6P)	φ10~φ14 φ6 ~φ12	Ex db eb ⅡCT6 Gb Ex tbⅢC T80℃ Db	IP66	WF2*
40	40	40	32	2×16	2×M40、1×M20(3P) 4×M40、1×M20(6P)	φ17~φ26 φ6 ~φ12
80	80	80	63	1×35	2×M50、1×M20(3P) 4×M50、1×M20(6P)	φ24~φ36 φ6 ~φ12	Ex db eb ⅡCT6 Gb Ex tb ⅢC T80℃ Db (-40℃~+40℃) Ex db eb ⅡCT5 Gb Ex tb ⅢCT95℃ Db (-40℃~+55℃)
Auxiliary Contacts		(1/ON-delay, 0/OFF-advance) 3-pole: 1NO, 3P with one normally open contact 6-pole: 1NO+1NC, 6P with one normally open and one normally closed contact Auxiliary terminal: 2×4mm²
*: Specify upon order.

3.Product Classification & Origin

HS Code: 8536500000
Country of Origin: China

4.Applicable Industries

Suitable for hazardous locations such as chemical industry, oil refining, petroleum exploitation, offshore oil platforms, oil tankers and military industry.

5.Credibility

The CH1290 explosion-proof safety switch is a mature, standardized GRP explosion-proof load disconnect switch featuring a standardized model system and comprehensive technical parameters. Its corrosion-resistant, anti-static enclosure comes with a safety interlock mechanism and achieves IP66 protection, applicable to gas and dust hazardous locations. Manufactured in accordance with prevailing standards for explosion-proof electrical products, corresponding explosion-proof certification documents are available upon project request to guarantee dependable supply and acceptance.

6.FAQs

Q1: What material is the enclosure of CH1290 explosion-proof safety switch, and how about its anti-corrosion performance?

A1: The enclosure is made of GRP glass fiber reinforced unsaturated polyester resin. It has anti-static and impact-resistant properties with WF2 anti-corrosion grade, excellent resistance to strong corrosion, suitable for long-term operation in highly corrosive environments such as chemical plants, coastal areas and offshore platforms.

 

Q2: Which hazardous locations can the CH1290 explosion-proof safety switch be used in, and what is its protection rating?

A2: It is applicable to Zone 1, Zone 2 for IIA~IIC explosive gas atmospheres, as well as Zone 21 and Zone 22 explosive dust locations. It features IP66 protection rating for indoor and outdoor installation, with an operating ambient temperature ranging from -40℃ to +60℃.

 

Q3: What is the function of the interlock device fitted on the CH1290 explosion-proof safety switch?

A3: It is equipped with a safety interlock mechanism. The enclosure cover cannot be opened when the switch is locked in the ON position, preventing safety hazards from opening the cover under live power and protecting maintenance personnel. Standard black handles and red/yellow emergency stop handles are optional to fit different working scenarios.