The Siemens SENTRON 3VA9144-0JH12 is a box terminal designated TS1.2, supplied as a pack of four units. It's an accessory for the 3VA6 150/250 molded-case circuit breaker family, adding a control-wire voltage tap-off point at the load-side lugs. That means you can pick up a control voltage directly at the breaker terminals without a separate tap block — saves a DIN-rail slot and a wiring step in the panel.
Lifecycle and sourcing
Listed as current/active on the lifecycle status. No phase-out or last-time-buy notice. This part is sourced and quoted to order through independent distribution; availability and current pricing are confirmed at quote time against an RFQ.