Description
Product Overview
The Marinco CDFF-E CLS cam-type coupler is engineered for demanding electrical installations where reliability and durability are paramount. Constructed from solid weatherproof rubber, this coupler is UL and CSA listed, meeting NEMA 3R and NEMA 4 standards for wet locations. Its 1/2 inch NPT thread size ensures a tight, leak‑free seal, while the green color provides easy visual identification on crowded panels. The non‑conductive retaining screw passes through the metal contact and fastens at both ends, delivering maximum resistance to excessive torque loading and preventing accidental disengagement.
![[Product front view showing all components]](https://www.finessemart.store/wp-content/uploads/2026/07/311de44a1ede495fa430418e109b7b5a.jpg)
Usage
Designed for a wide range of outdoor and marine applications, this coupler excels in environments exposed to rain, splashing, and occasional submersion. It is ideal for connecting generators, marine engines, outdoor lighting circuits, and industrial control panels that require a robust 400 A rating. Electricians and maintenance technicians will appreciate the ease of installation—simply thread the coupler onto compatible cam‑type connectors and tighten the retaining screw to achieve a secure, torque‑resistant joint. The coupler’s compact dimensions (6.1 x 1.7 x 0.1 inches) allow it to fit into tight panel spaces without compromising performance.
Why Choose Us
Marinco Power Products has a long history of delivering high‑quality electrical components that meet rigorous industry standards. This CLS series coupler benefits from a solid weatherproof construction that resists UV degradation, chemicals, and temperature extremes, ensuring a long service life even in harsh conditions. The integrated non‑conductive retaining screw design provides superior torque control, reducing the risk of over‑tightening and associated damage. Additionally, each unit undergoes thorough testing for compliance with UL, CSA, and NEMA specifications, giving you confidence in its safety and performance.
Key Features
- Weather‑proof rubber body protects against moisture, UV, and chemicals for lasting reliability.
- UL and CSA listed, meeting NEMA 3R and 4 ratings for wet‑location use.
- Non‑conductive retaining screw prevents torque overload and ensures a secure connection.
- Compact 1/2″ NPT thread size fits standard cam‑type connectors in tight panel spaces.
- Dedicated customer support and after‑sales service for installation assistance and warranty claims.
FAQ
What size thread does this coupler use?
The coupler features a 1/2 inch NPT (National Pipe Thread) size, compatible with standard cam‑type connectors that use the same thread specification.
Is this coupler suitable for marine applications?
Yes. Its rubber construction is weather‑proof and meets NEMA 3R and 4 ratings, making it ideal for marine environments where exposure to water and salt spray is common.
How does the retaining screw improve performance?
The non‑conductive retaining screw passes through the metal contact and fastens at both ends, providing maximum resistance to excessive torque loading. This design helps maintain a consistent, secure connection and reduces the chance of accidental disengagement.
Can this coupler be used in indoor panels?
Absolutely. While optimized for wet locations, the coupler’s robust construction also makes it suitable for indoor panels that require a reliable, high‑current connection.
What warranty does Marinco offer?
Marinco provides a limited one‑year warranty covering manufacturing defects, backed by responsive technical support to assist with any installation or performance questions.





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