Brochure

PowerPact H-, J-, and L-Frame Circuit Breakers
Trip Units
86
02/2016 © 2011–2016 Schneider Electric
All Rights Reserved
Protection of Distribution Systems
Thermal-Magnetic Trip Units
TM thermal-magnetic trip units can be used on PowerPact H and J-frame circuit breakers with interrupting
levels D/G/J/L. Thermal-magnetic trip units are available in factory sealed or field-interchangeable
constructions.
t
0
l
n
l
i
l
H-Frame Trip Curve
(l
n
) Fixed threshold thermal
protection against
overload
(l
i
) Fixed threshold
instantaneous protection
against short circuits
Table 63: H-Frame and J-Frame Three-Pole Field-Installable Thermal-Magnetic Trip Unit
15–60 A H-Frame 70–150 A H-Frame 150–250 A J-Frame
Amperage Cat. No. Amperage Cat. No. Amperage Cat. No.
15 A HT3015 70 A HT3070 150 A JT3150
20 A HT3020 80 A HT3080 175 A JT3175
25 A HT3025 90 A HT3090 200 A JT3200
30 A HT3030 100 A HT3100 225 A JT3225
35 A HT3035 110 A HT3110 250 A JT3250
40 A HT3040 125 A HT3125 — —
45 A HT3045 150 A HT3150 — —
50 A HT3050 — — — —
60 A HT3060 — — — —
250A
1250
2500
l
n
l
m
(= l
i
)
60A
1125A
(l
n
)(l
i
)
250A
1250
2500
(l
n
)(l
m
)
J-Frame Trip Unit
H-Frame Trip Unit