Introduction to CAGE CLAMP® and Mersen’s spring terminal technology

Spring Terminal Technology

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Spring Terminal Technology

Mersen Spring Terminals versus Screw Terminals

Wire retention spring reinforces high contact pressureWire surrounded

on all four sides

“S” bend provides defined contact area

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Spring Terminal Technology

The Spring Terminal Advantage– Higher Degree of Reliability

• Low contact resistance• Vibration, corrosion and temperature cycling resistant

– Lower Total System Cost• Material and labor

– Increased Ease-of-Use• Tool-free, simple to operate

– CAGE CLAMP has over 25 years of field experience and acceptance!

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Spring Terminal Technology

Higher Reliability – Contact Resistance– Every electrical connection resists the flow of electrons

– As the flow is impeded, voltage is lost, heat is generated

– Contact resistance of screw terminals can vary as vibration, corrosion and temperature cycling impact the contact point

– Spring terminal technology has very low contact resistance which is maintained over time even in hostile environments

Micro-scale image of two contact surfaces

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Spring Terminal Technology

Higher Reliability – Performance Under Vibration– Tested under vibration to 2000 Hz, acceleration up to 80G

– Tested for resonant frequencies from 5Hz to 250Hz

– Tested to shocks of 109G in the X, Y and Z-axis

– No contact failure, no wire damage, maintenance free

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Spring Terminal Technology

Higher Reliability – Performance Under Corrosion– Spring terminal material is made of corrosion resistant material

(stainless steel)

– Tin-plated current carrying bar ensures gas-tight connection

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Spring Terminal Technology

Higher Reliability – Performance Under Temperature Cycling– As temperatures fluctuate metals expand and contract

– Different metals expand and contract at different rates and conductors deform

– Screw terminals are static, expansion and contraction will have a negative impact on contact pressure

– Spring terminals are dynamic and will compensate for changes

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Spring Terminal Technology

Lower Total Cost – Material and Labor– Reduce installation time by up to 75% by installing conductors

without the need for tools or torque specifications

– Flip open and close the terminal lever in just seconds

– Maintenance free, spring terminals eliminate the need for routine screw terminal re-tightening

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Spring Terminal Technology

Increased Ease-of-Use– No tools required – Wire can be inserted and terminated into the

fuseholder without the use of a screwdriver or other tools

– Simple to operate – No torque specs to follow, just open and close terminal via the lever

– Superior connection every time, independent of operator skill

Terminal OpenTerminal Closed

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Spring Terminal Technology

Features and Benefits – Summary

Higher

Reliability

Low contact resistance

Superior performance under vibration

Corrosion resistant

Superior performance under temperature cycling

Lower

Total Cost

Reduce installation time by up to 75%

Maintenance Free

Increased

Ease-of-Use

No tool required

Superior connection independent of operator skill

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Spring Terminal Technology

Product Offering– USG series fuseholder now available for class CC (USGCC),

midget class (USGM) and photovoltaic midget class (USGM-HEL)

– Mersen is the first manufacturer to offer screw-less, spring pressure, wire termination technology into a power fuseholder, delivering the best of both technologies to its customers

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