BuyLog Flippingbook MAR 2024

METERING, BUYLOG SECTION 2

2-15

— ReliaMod™ Thermal magnetic adjustable (TMA) trip units

All 400A and 600A breakers in the ReliaMod™ offering will be the Tmax XT5 TMA frame breaker and all 800A breakers in the ReliaMod™ offering will be the Tmax XT6 TMA frame breaker. This includes both main breaker modules and tenant mains in 400A meter stacks. While these Tmax XT breakers do not have rating plugs to adjust trip ratings, the TMA trip unit does have some level of adjustability.

Tmax XT breakers with TMA (Thermal Mag Adjustable) trip units have an adjustable long time overload protection setting of Max, Medium, and Min. The Max setting is the breaker frame rating. So if you have a 400A XT5 breaker at max, the long time overload is 400A. From there, you go down 15% from the 400A max to get the Medium setting. And then down 30% from the 400A max to get the minimum setting.

Examples

800A XT6 Frame TMA Breaker Long Time Overload Setting:

600A XT5 Frame TMA Breaker Long Time Overload Setting:

400A XT5 Frame TMA Breaker Long Time Overload Setting:

Max: 800A Med: 680A Min: 560A

Max: 600A Med: 510A Min: 420A

Max: 400A Med: 340A Min: 280A

Breaker Frame Size:

Instantaneous Trip Setting

Long Time Overload Setting

Breaker Frame Size:

Long Time Overload Setting

Instantaneous Trip Setting

Breaker Frame Size:

Long Time Overload Setting

Instantaneous Trip Setting