Changsong Electric, a global supplier in advanced industrial electrical connectivity and cable management solutions, is pleased to announce a major expansion of its certified product portfolio. The company’s flagship series of UL Certified Cable Glands, available in both PG and Metric (M) threads, is now available with highly versatile, integrated Multi-Hole Sealing Inserts.
This innovation directly addresses the growing complexity of modern industrial wiring, where multiple power, control, signal, or data cables often need to enter a single junction box, panel, or enclosure. This new series reinforces Changsong Electric’s commitment to providing space-saving, compliant, and high-performance solutions.
Mastering Space Efficiency: Multi-Hole vs. Standard Glands
The core limitation of standard cable glands is that they are designed to seal one circular cable at a time. In systems with multiple sensors, actuators, or communication lines, this requires drilling numerous entry holes, leading to increased installation time, material costs, and multiple potential points of failure for environmental sealing.
The Advantages of Multi-Hole Sealing
Our Multi-Hole Sealing Inserts revolutionize this process. A single gland can now securely seal two, three, four, or more cables simultaneously, depending on their diameters. This provides immediate benefits:
- Reduced Footprint:Fewer holes are required on enclosures, saving valuable space.
- Lower Cost:Reduced inventory of glands and decreased labor time for installation.
- Simplified Management:Neater cable routing and easier maintenance.
Standardizing Safety: The Importance of UL Certification
Regardless of the number of cables Passing through them, all CHSO’s multi-hole cable glands maintain strict safety standards. UL (Underwriters Laboratories) Certification is a non-negotiable requirement for critical industrial applications, particularly in North America.
Guaranteed Protection
Using UL Certified Cable Glands ensures that the entire system meets recognized safety codes for pull-out resistance, strain relief, environmental degradation, and electrical safety. It provides specifiers and end-users with peace of mind that the multi-hole configurations have been rigorously tested to maintain their structural integrity and protective IP rating under load.
Maintaining Environmental Integrity
A common challenge with multi-hole entries is maintaining the IP68 waterproof and dustproof rating. Our engineering team has developed precision-fit rubber compounds that compress uniformly around each individual conductor when the gland cap is tightened. This eliminates gaps between the cables and the insert, ensuring a perfect seal every time, provided the cables fall within the specified diameter range.
Versatility in Standards: PG vs. Metric Multi-Hole Options
Changsong Electric ensures that this multi-hole innovation is accessible regardless of your equipment’s thread standard. We offer a comprehensive lineup across both major specifications.
- Metric (M) Threads:As the preferred international standard (ISO), our Metric multi-hole glands (e.g., M25, M32) are ideal for new equipment designs and global machinery compatibility.
- PG (Panzergewinde) Threads:To support maintenance, repair, and legacy European systems, we offer a full range of PG multi-hole glands (e.g., PG16, PG21), allowing for the effortless upgrade of existing systems to multi-conductor entries.
Our dual offering means that whether you are designing a next-generation automation cell or retrofitting an older control panel, CHSO has the correctly threaded, UL-certified multi-hole gland for your needs.
Product Specifications and Configuration Guide
To help you select the appropriate configuration, we have detailed some common multi-hole options. (Please contact us for a complete list, as custom insert configurations are also available.)
| Model Series(Core Body) | Thread Type | Available Thread Sizes | Common Insert Configurations (e.g.) | Suitable Cable Diams(per hole) | IP Rating | UL Status |
| CG-M-MH Series | Metric (ISO) | M16 to M63 | 2x4mm, 3x5mm, 4x3mm, 6x4mm | Variable (Specify upon ordering) | IP68 | Certified |
| CG-PG-MH Series | PG (DIN) | PG9 to PG48 | 2x3mm, 3x6mm, 4x5mm | Variable (Specify upon ordering) | IP68 | Certified |
