What is the difference Between NSX Vigi Block LV429210 & LV431535?

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LV429210 - Is Vigi block MH type for NSX100/160 (200 to 440 V)

LV431535 - Is Vigi block MH type for NSX250 (200 to 440 V)

Even though Tech datasheet specifies the LV429210 is rated for NSX upto 250, It is recommended to use the Vigi module only for NSX 100/160.

However, LV431535 can be used for NSX100/160/250.