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Siemens 3RB3026-2PB0 — Overload Relays

Siemens 3RB3026-2PB0 SIRIUS Solid-State Overload Relay, CLAS

MPN3RB3026-2PB0
Active

Siemens SIRIUS solid-state overload relay, 3RB3026-2PB0, CLASS 20E, rated 690 V, 4 A thermal current, S0 size, contactor mounting.

Siemens 3RB3026-2PB0 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RB3026-2PB0 — Identification
ParameterValue
Product brand nameSIRIUS
Product designationsolid-state overload relay
Frame size (overload relay)S0
Combinable contactor sizesS0
Reference code (IEC 81346-2)F
3RB3026-2PB0 — Protection & Trip
ParameterValue
Overload current setting range1 ... 4 A
Trip classCLASS 20E
Overload release typeelectronic
3RB3026-2PB0 — Electrical (main circuit)
ParameterValue
Rated operational current4 A
Poles (main circuit)3
Rated operating frequency50 ... 60 Hz
Rated insulation voltage (AC, pollution degree 3)690 V
Rated value (AC-3e), max.690 V
Rated surge withstand voltage6 kV
Main current circuitscrew-type terminals
Power loss at rated current (hot)0.1 W
Per pole0.03 W
3RB3026-2PB0 — Auxiliary contacts
ParameterValue
Auxiliary contacts: NO1
Auxiliary contacts: NC1
Auxiliary contacts: CO (changeover)0
Auxiliary switch short-circuit protection (required fuse)fuse gG: 6 A
Switching current at 24 V2 A
Switching current at 60 V0.55 A
Switching current at 110 V0.3 A
Switching current at 120 V4 A
Switching current at 125 V0.3 A
Switching current at 220 V0.11 A
Switching current at 230 V3 A
3RB3026-2PB0 — Connection & Mounting
ParameterValue
Mounting / fastening methodContactor mounting
Mounting positionany
Main-circuit connector arrangementTop and bottom
Auxiliary/control circuit connection typescrew-type terminals
Removable aux./control terminalYes
Conductor cross-section: solid1x (0.5 ... 4 mm²), 2x (0.5 ... 2.5 mm²)
Conductor cross-section: solid or stranded1x (0,5 ... 4 mm²), 2x (0,5 ... 2,5 mm²)
Conductor cross-section: finely stranded with ferrule1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 mm²)
3RB3026-2PB0 — Environmental
ParameterValue
Operating temperature-25 ... +60 °C
Storage temperature-40 ... +80 °C
Transport temperature-40 ... +80 °C
Relative humidity, operating10 ... 95 %
Max. installation altitude2 000 m
Shock resistance15g / 11 ms
3RB3026-2PB0 — Mechanical
ParameterValue
Width45 mm
Height87 mm
Depth84 mm

Product details

Its CLASS 20E trip curve means it allows motor starting inrush up to 20 seconds before tripping — sized for standard induction motors driving pumps, fans, or conveyors where the start is not prolonged. The 4 A thermal current at 690 V rated value sets the continuous load capacity of the relay's main circuit. Contactor mounting means it snaps directly onto a matching SIRIUS contactor, saving DIN-rail space and simplifying the motor starter stack.

Integration notes

Mounts directly on a SIRIUS contactor — no DIN-rail bracket needed. Screw-type terminals accept solid or stranded wire: 1x (0.5 to 4 mm²) or 2x (0.5 to 2.5 mm²) for the main circuit, and 2x 10 mm² stranded for the auxiliary. Vibration resistance 1-6 Hz at 15 mm, 6-500 Hz at 20 m/s², 10 cycles. Shock resistance 15g / 11 ms. The integrated auxiliary switch signals the tripped state — the note for message "tripped" is the relay's own diagnostic output.

Frequently asked questions

Where can I buy 3RB3026-2PB0?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the note for message 'tripped' on this relay?

The relay carries a note for message "tripped", which indicates the integrated auxiliary switch signals the tripped state.

What is the depth of 3RB3026-2PB0?

The depth is 84 mm.

Will 3RB3026-2PB0 drop into a panel specified around 3RU2116-1FC1?

Both are SIRIUS overload relays in the S0 size, so the footprint and contactor mounting are the same. No rewiring of the panel layout is needed, though terminal assignments should be verified against the existing wiring diagram.

What compliance documentation does this brand provide?

The part carries a substance prohibitance date of 10/01/2009, indicating RoHS compliance per the EU directive. Full documentation is available from the manufacturer.

MPN
3RB3026-2PB0