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Siemens 3RH6911-1HA11 SIRIUS 1 NO + 1 NC Front-Mounted Auxiliary Contact Block
Manufacturer: Siemens
Condition: Brand New
Lead Time: In Stock
Origin: Germany
Warranty: 12 Months
Email: [email protected]
whatsApp: +86-18150117685
- Overview
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Overview
- Use the approved front accessory position on the host.
- Keep room for front fitting, removal and terminal access.
- Match the auxiliary contact duties to the control circuit.
- Isolate the host and apply the specified terminal torque during installation.
3RH6911-1HA11 SIRIUS 1 NO + 1 NC Front-Mounted Auxiliary Contact Block
A front-mounted auxiliary contact block with 1 NO + 1 NC standard switching and M3 screw-terminal wiring.
At a Glance
| Brand | Siemens |
|---|---|
| Model | 3RH6911-1HA11 |
| Product Type | Auxiliary contact block |
| Core Function | Auxiliary control-circuit expansion |
| Application | Compatible 3RT6 and 3RH6 devices |
Front accessory position
The -HA arrangement attaches at the front of the compatible host device.
Standard NO/NC pair
The contact configuration supplies one normally open path and one normally closed path.
AC and DC duty selection
A600/Q600 pilot-duty classification accompanies the stated AC general-purpose and DC pilot-duty ratings.
Product Overview
3RH6911-1HA11 provides auxiliary contact expansion at the front of a compatible SIRIUS contactor or contactor relay.
Its 1 NO + 1 NC standard contact arrangement can serve the external control circuit while the front attachment and screw-terminal layout define the required mounting and wiring access.
Key Functions
Expand the front contact arrangement
The auxiliary block adds a standard normally open and normally closed pair at the front mounting position.
Connect the control-circuit load
The contacts carry the specified 240 V AC general-purpose or 24 V DC pilot-duty load within their corresponding ratings.
Keep terminal service access defined
M3 screw connections use a PZ2 tool and a specified 0.8–1.2 N·m torque range.
Official Specifications
| Contact arrangement | 1 NO + 1 NC |
|---|---|
| Connection technology | M3 screw terminals |
| Mounting arrangement | Front attachment |
| Switching action | Standard switching |
| AC general-purpose rating | 10 A at 240 V AC |
| DC pilot-duty rating | 6 A at 24 V DC |
| Pilot-duty designation | A600 / Q600 |
| Terminal tightening torque | 0.8–1.2 N·m |
| Terminal screwdriver | PZ2, blade diameter 5–6 mm |
| Product safety standards | UL 60947-1 and UL 60947-5-1; CSA C22.2 No. 60947-1 and No. 60947-5-1 |
Frequently Asked Questions
Can 3RH6911-1HA11 be installed as a front accessory on a 3RT6.2 S0 contactor?
Yes, the 3RT6.2 installation instructions include the 3RH6911-.HA.. front auxiliary-block arrangement.
Will 3RH6911-1HA11 use the same attachment position as a -DA auxiliary block?
No, the -HA block mounts at the front, whereas a -DA block uses the lateral accessory position.
Which contact states can I obtain from 3RH6911-1HA11?
The block provides one normally open and one normally closed auxiliary contact with standard switching action.
Can I treat 3RH6911-1HA11 as a delayed or overlapping contact unit?
No, its standard switching function does not identify a make-before-break or delayed switching design.
What output-duty classification applies when selecting a control load for 3RH6911-1HA11?
The auxiliary block is classified A600/Q600, with a 10 A at 240 V AC general-purpose rating and a 6 A at 24 V DC pilot-duty rating.
Which screwdriver should I use for the auxiliary screws on 3RH6911-1HA11?
Use a PZ2 screwdriver with a 5–6 mm blade diameter and tighten the M3 terminals to 0.8–1.2 N·m.
Can I add 3RH6911-1HA11 to an energized contactor assembly?
No, isolate and lock out every power supply to the host device before installing the auxiliary block.
