Siemens 3RU2116-1HB0: a 3RU2 thermal overload relay in size S00 with a setting range of 5.5 … 8.0 A and CLASS 10 tripping, built for contactor mounting. It has 1 NO + 1 NC auxiliary contacts: the NC contact opens the contactor coil circuit on overload and the NO contact can signal the trip to the PLC.
A relay that trips repeatedly is often a sign of a mechanical problem or phase loss, but bimetal relays also age; replacing an old relay with a new one of the same range is a common maintenance task.
See our Siemens industrial controls for matching 3RT2 contactors in size S00.
Technical data
| Siemens order number | 3RU2116-1HB0 |
|---|---|
| Product | SIRIUS 3RU2 thermal overload relay |
| Size | S00 |
| Current setting range | 5.5 … 8.0 A |
| Trip class | CLASS 10 |
| Auxiliary contacts | 1 NO + 1 NC |
| Rated operating voltage | 690 V |
| Motor power at 400 V (approx.) | 3 kW |
| Mounting | Contactor mounting (size S00) |
| FLA, 3-phase motor at 480 V (UL) | 8 A |
| Power loss (hot, total) | 6.6 W |
| Ambient temperature (operation) | -40 … +70 °C |
| Dimensions (W x H x D) | 45 x 76 x 70 mm |
| Net weight | 0.13 kg |
| Condition | New, original Siemens |
Typical applications
- Motor starters with SIRIUS 3RT2 contactors
- Protection of motors with rated current 5.5 … 8.0 A
- Pumps, fans and conveyors in water, HVAC and packaging plants
- Replacement of an aged or damaged overload relay
Compatibility and replacement
Plugs directly onto 3RT2 contactors of size S00 (3RT201x). For separate (stand-alone) mounting Siemens offers a terminal support. It replaces the earlier 3RU11 series of the same setting range; send us the old order number to confirm.
Frequently asked questions
Manual or automatic reset?
The data sheet title lists manual-automatic reset; the mode is selected on the relay front.
Which contactor does it fit?
SIRIUS 3RT2 contactors of size S00.
What is the UL full-load current rating?
Per Siemens: 8 A for a 3-phase motor at 480 V.
How fast can you deliver, and is there a warranty?
Air shipping usually takes 5 to 7 days once the part is ready, to almost any country. Each part is new and original with a 1-year warranty. Message us on WhatsApp with the order number for a quotation.
Ordering tips
Send us the full order number from the label of the old part, or a clear photo of the label, together with the quantity you need. We check the number against the current manufacturer data before we quote and tell you if there is a newer replacement.
Every part RendatSP supplies is new and original, carries a 1-year warranty and ships worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Send us the order number and quantity on WhatsApp or through the inquiry form and we will quote the same working day. Agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
