SENTRON 3VA9 accessory for digital I/O and circuit-breaker communication in compatible 3VA2 installations.
Siemens 3VA99870UA10 is the compact search form of manufacturer order code 3VA9987-0UA10, an EFB300 external function box supplied with a 1.5 m connecting cable. Siemens specifies it as a SENTRON 3VA9 accessory for 3VA20 through 3VA26 molded-case circuit breakers. The unit extends breaker installations with one digital input, two relay outputs, two static semiconductor outputs and a circuit-breaker communication interface. It uses a rated 24 V DC control supply and is intended for fixed switchboards inside enclosed rooms. Procurement should verify the exact breaker frame, communication arrangement, supply, wiring and label before installation.
| Item | Status |
|---|---|
| Product Condition | Original new |
| Availability | In stock |
| Official Product Lifecycle | Active Product |
| Warranty | With 1 year warranty |
| Shipping | Worldwide shipping coordination |
Condition, availability and warranty are Stockoems commercial information and are not manufacturer commitments.
| Parameter | Officially Confirmed Value |
|---|---|
| Manufacturer | Siemens |
| Customer Search Part Number | 3VA99870UA10 |
| Manufacturer Order Code | 3VA9987-0UA10 |
| Product Designation | External function box EFB300 |
| Series | SENTRON 3VA9 |
| Specified Breaker Family | 3VA20 to 3VA26 |
| Included Connecting Cable | 1.5 m |
| Rated Control Supply | 24 V DC |
| Digital Inputs | 1 |
| Relay Outputs | 2 |
| Static Semiconductor Outputs | 2 |
| Circuit-Breaker Communication Interfaces | 1 |
| Protection | IP20 according to IEC 60529 |
| Electrical Connection | Removable / pluggable |
| Dimensions (W × H × D) | 70 × 116 × 36 mm |
| Net Weight | 0.2425 kg |
External I/O and communication support for fixed 3VA2 breaker installations in enclosed switchboards.
Routes one digital input and multiple output channels for engineered breaker monitoring and control functions.
Supports verified retrofit or expansion projects where the existing breaker and communication architecture match.
Provides a defined external connection point for approved 24 V DC control and breaker communication wiring.
Siemens currently identifies 3VA9987-0UA10 as Active Product. Lifecycle wording applies only to this exact manufacturer order code.
It is the compact search form for Siemens 3VA9987-0UA10, an EFB300 external function box in the SENTRON 3VA9 accessory range.
The official product description specifies use as an accessory for 3VA20 through 3VA26 molded-case circuit breakers.
Official data lists one digital input, two relay outputs and two static semiconductor outputs.
No. Siemens currently states the lifecycle as Active Product.
Confirm the complete number, 3VA2 breaker frame, 24 V DC supply, communication arrangement, required quantity and label photos.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Structured verification, inspection, packaging and delivery coordination for Siemens 3VA99870UA10 procurement.
Model and suffix verification, condition confirmation, and product-label comparison before order processing.
Compatibility review for the 3VA2 breaker family, 24 V DC supply, wiring and communication arrangement.
Product and label photo confirmation, terminal inspection and cable-condition review when available.
Protective packaging, worldwide shipping coordination, shipment tracking and customs-document preparation.
| Control Point | Service Scope |
|---|---|
| Model and suffix verification | Checks the requested and manufacturer-formatted part numbers. |
| Condition confirmation | Documents the agreed commercial condition. |
| Technical compatibility review | Reviews system family, breaker frame, supply and interface requirements. |
| Product and label photos | Supports identity and visible-condition checks. |
| Protective packaging | Uses handling suitable for industrial electronics and accessories. |
| Worldwide shipping | Coordinates available carrier and route options. |
| Shipment tracking | Provides dispatch and tracking information after shipment. |
| Customs documentation | Prepares available commercial shipment documents. |
| Written warranty terms | States the agreed Stockoems warranty coverage in writing. |
| Return authorization process | Requires documented review before an approved return. |
| After-sales response | Coordinates order, documentation and post-delivery questions. |
Request the complete part number, clear label photos, written condition, traceable quotation terms, compatibility questions, packaging details, warranty wording and a documented return-authorization process.
Compare the exact suffix, electrical ratings, interfaces, firmware or revision requirements, mounting, system family and official lifecycle. Similar appearance is not proof of compatibility.
Incomplete model numbers, reused photos, unverifiable labels, unsupported technical claims, pressure to order without compatibility review, vague warranty language and refusal to document return conditions are warning signs.
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