All maximum handling powers mentioned are in PEP, SSB and based on 30 seconds on and 30 seconds off rate of transmission and receiving.
When transmitting, antenna’s transformer will heat up because of the losses in ferrite. When the temperature of the ferrite reaches it maximum, VSWR will increase until temperature drops again. SSB transmission powers are Peak envelop powers and not comparable with CW and Digital RF powers. For digital and CW power, an average of  35W CW or digital can be compared to 200W PEP SSB.