PSR37, PSR45 soft starters are used to start electric motors. The product has the characteristics of small starting current, low energy consumption, low noise and long service life.
This guide provides important safety information and step‑by‑step instructions for installing, commissioning and servicing ABB PSR37 and PSR45 softstarters. It emphasizes the need for a qualified electrician, proper disconnect of mains voltage, and verification of LED indicators before proceeding.
The manual details wiring connections (A1‑A2 for supply, L1‑L3 for mains), motor terminal connections (T1‑T3), and protection settings. It also lists technical limits such as voltage, current and wire‑gauge requirements, ensuring the device operates within its specified ratings.
| Maximum current | 85000 A rms (symmetrical) |
|---|---|
| Torque rating | 4.0 Nm (continuous) / 0.6 Nm (peak) |
| Wire gauge range | AWG 8 to AWG 4 (output) and AWG 18 to AWG 12 (input) |
| Overload protection | Instantaneous trip circuit breaker type T3S150MW |
The mains voltage (L1‑L3) must be switched OFF before any installation or service work.
Supply voltage is applied to terminals A1 and A2.