Siemens 3RH6911-1DA11 SIRIUS 1 NO + 1 NC Side-Mounted Auxiliary Contact Block

Overview

SIEMENS SIRIUS 3RH69

3RH6911-1DA11 SIRIUS 1 NO + 1 NC Side-Mounted Auxiliary Contact Block

A side-mounted, screw-terminal auxiliary block with one normally open and one normally closed contact.

At a Glance

Brand	Siemens
Model	3RH6911-1DA11
Product Type	Auxiliary contact block
Core Function	Contactor state signaling
Application	Compatible 3RT6 and 3RH6 devices

Lateral fitting

The -DA design mounts at the side of a compatible contactor or contactor relay.

Two contact functions

One NO and one NC element provide complementary auxiliary control paths.

Specified terminal tightening

M3 screws use a PZ2 screwdriver and 0.8–1.2 N·m tightening torque.

Product Overview

3RH6911-1DA11 adds a normally open and a normally closed auxiliary contact through a lateral mounting arrangement on compatible SIRIUS devices.

The standard-switching block uses screw terminals and provides defined AC general-purpose and DC pilot-duty ratings for control-circuit selection.

Ordering focus: Match the lateral attachment point and host-device accessory arrangement, then select the auxiliary load using the applicable AC or DC duty rating.

Key Functions

Add auxiliary state paths

One NO contact and one NC contact provide the switching elements used by the connected control circuit.

Use the side accessory position

The -DA mounting pattern fits laterally to the compatible host rather than occupying its front accessory position.

Terminate the auxiliary circuit

M3 screw terminals provide the field connection with 0.8–1.2 N·m controlled tightening.

Official Specifications

Contact arrangement	1 NO + 1 NC
Connection technology	M3 screw terminals
Mounting arrangement	Lateral 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

Official source:Siemens 3RH69 certification and model coding · SIRIUS S00 accessory installation and wiring

Frequently Asked Questions

Can I fit 3RH6911-1DA11 in the front accessory position instead of at the side?

No, the -DA design is a laterally mounted auxiliary contact block.

Does 3RH6911-1DA11 provide both a closing and an opening auxiliary contact?

Yes, it has one normally open contact and one normally closed contact.

Is 3RH6911-1DA11 a make-before-break contact block?

No, the A switching-function code identifies standard switching rather than make-before-break action.

What torque should I use on the M3 terminals of 3RH6911-1DA11?

Tighten the auxiliary terminal screws to 0.8–1.2 N·m using a PZ2 screwdriver.

Can I use the 10 A rating of 3RH6911-1DA11 for a 240 V AC general-purpose circuit?

Yes, the AC general-purpose rating is 10 A at 240 V AC.

Does the 6 A at 24 V DC rating of 3RH6911-1DA11 describe a coil supply?

No, it is the auxiliary contact pilot-duty rating for a 24 V DC control circuit.

What must be done before attaching or removing 3RH6911-1DA11?

Turn off and lock out all power supplying the host device before working on the auxiliary block.

Compatibility & Ordering Notes

Before ordering 3RH6911-1DA11: Choose the -DA lateral version for the available side accessory position, preserve the 1 NO + 1 NC standard contact arrangement and match the host contactor or relay accessory rules.

Compatibility Checklist for 3RH6911-1DA11

• Match the lateral accessory interface of the 3RT6 or 3RH6 host.
• Retain the required one-NO and one-NC control paths.
• Select the load by voltage and duty category.
• Use 0.8–1.2 N·m on the M3 auxiliary terminals.

Hot Selling Models