单极 OVR BT2 15-320 P 15 320 OVR BT2 15-440 P 15 440 OVR BT2 40-320 P 40 320 OVR BT2 40-440 P 40 440 OVR BT2 70-440s P 65 440 OVR BT2 100-440s P TS 100 440 OVR BT2 100 N P 100 255 单极+中性线 OVR BT2 1N-15-320 P 15 320 OVR BT2 1N-40-320 P 40 320 OVR BT2 1N-70-320s P 70 320 OVR BT2 1N-70-440s P TS 70 440 三极+中性 OVR BT2 3N-15-320 P 15 320 OVR BT2 3N-15-440 P 15 440 OVR BT2 3N-40-320 P 40 320 OVR BT2 3N-40-440 P TS 40 440 OVR BT2 3N-70-320s P TS 70 320 OVR BT2 3N-70-440s P TS 70 440