Siemens Overload Relay Heaters for Class 20 Trip
Heaters provide a maximum trip rating of 125% of minimum motor amperes for 40°C motors (service factor 1.15). For other motors (service factor 1.0), select the next lower listed heater catalog number within the designated table, which provides a maximum trip rating of approximately 115%.
Overload relays do not provide protection against short circuits. To ensure proper coordination with short circuit protective device, select heaters from the information packaged with the control device.

Products
Model Number | FLA @ Size 00, 0, 1 | FLA @ Size 1.75 | FLA @ Size 2, 2.5 | FLA @ Size 3, 3.5 | FLA @ Size 4 |
---|---|---|---|---|---|
![]() | 99.1-108 | ||||
![]() | |||||
![]() | 106-115 | ||||
![]() | 116-130 | ||||
![]() | 0.54-0.57 | ||||
![]() | 0.58-0.62 | ||||
![]() | 0.63-0.66 | ||||
![]() | 0.67-0.72 | ||||
![]() | 0.73-0.80 | ||||
![]() | 0.81-0.85 | ||||
![]() | 0.86-0.92 | ||||
![]() | 0.93-0.99 | ||||
![]() | 1.00-1.08 | ||||
![]() | 1.09-1.23 | ||||
![]() | 1.24-1.37 | ||||
![]() | 1.38-1.54 | ||||
![]() | 1.55-1.69 | ||||
![]() | 1.70-1.80 | ||||
![]() | 1.81-1.94 | ||||
![]() | 1.95-2.07 | ||||
![]() | 2.08-2.26 | ||||
![]() | 2.27-2.54 | 2.27-2.54 | |||
![]() | 2.55-2.69 | 2.55-2.69 | |||
![]() | 2.70-2.88 | 2.70-2.88 | |||
![]() | 2.89-3.14 | 2.89-3.14 | |||
![]() | 3.15-3.40 | 3.15-3.40 | |||
![]() | 3.41-3.81 | 3.41-3.81 | |||
![]() | 3.82-4.26 | 3.82-4.25 | |||
![]() | 4.27-4.62 | 4.26-4.62 | |||
![]() | 4.63-5.09 | 4.63-5.09 | |||
![]() | 5.10-5.61 | 5.10-5.61 | |||
![]() | 5.62-5.91 | 5.62-5.91 | |||
![]() | 5.92-6.15 | 5.92-6.15 | |||
![]() | 6.16-6.70 | 6.16-6.70 | |||
![]() | 6.71-7.54 | 6.71-7.54 | |||
![]() | 7.55-8.29 | 7.55-8.29 | |||
![]() | 8.30-8.99 | 8.30-8.99 | |||
![]() | 9.00-9.85 | 9.00-9.85 | |||
![]() | 9.86-10.4 | 9.86-10.4 | |||
![]() | 10.5-12.0 | 10.5-12.0 | 10.5-12.0 | ||
![]() | 12.1-13.6 | 12.1-13.6 | 12.1-13.6 | ||
![]() | 0.38-0.40 | ||||
![]() | 13.7-15.6 | 13.7-15.6 | 13.7-15.6 | ||
![]() | 15.7-17.0 | 15.7-17.0 | 15.7-17.1 | ||
![]() | 17.1-18.4 | 17.1-19.4 | 17.2-19-4 | ||
![]() | 18.5-19.4 | 19.5-20.9 | 19.5-20.9 | ||
![]() | 19.5-21.3 | 21.0-22.2 | 21.0-22.2 | ||
![]() | 21.4-24.4 | 22.3-25.3 | 22.3-25.3 | ||
![]() | 24.5-25.9 | 25.4-26.9 | 25.4-26.9 | 30.0-33.5 | |
![]() | 0.41-0.43 | ||||
![]() | 26.0-27.0 | 27.0-30.2 | 27.0-30.2 | 33.6-36.4 | |
![]() | 36.5-39.6 | ||||
![]() | 30.3-33.3 | 30.3-33.3 | |||
![]() | 33.4-36.0 | 33.4-35.3 | 39.7-43.6 | ||
![]() | 43.7-46.5 | ||||
![]() | 35.4-41.5 | 46.6-51.6 | |||
![]() | 41.6-45.0 | 51.7-54.4 | |||
![]() | 45.1-52.3 | 54.5-58.0 | |||
![]() | 52.4-55.7 | 58.1-63.0 | |||
![]() | 55.8-60.0 | 63.1-67.7 | |||
![]() | 0.44-0.48 | ||||
![]() | 67.8-72.4 | ||||
![]() | |||||
![]() | 56.9-60.9 | ||||
![]() | 0.49-0.53 | ||||
![]() | 61.0-63.9 | ||||
![]() | 64.0-67.7 | ||||
![]() | 67.8-72.4 | ||||
![]() | 72.5-80.0 | 72.5-77.7 | |||
![]() | 80.1-88.1 | 77.8-85.9 | |||
![]() | 88.2-91.5 | 86.0-91.9 | |||
![]() | 91.6-96.8 | 92.0-96.7 | |||
![]() | 96.9-99.0 | 96.8-105 |