Siemens | Sirius ACT Round Push-button 22mm 500V AC/DC | Black Flat Momentary
The Siemens PB-P-BLK is a 22mm round push-button for front panel mounting, rated 5V to 500V AC or DC with a thermal current of 10A. The PB-P-BLK is supplied as a complete unit: a black flat momentary actuator, a black standard front ring, the holder, and one normally open contact module on screw terminals. It sits in the Siemens Sirius ACT range and carries the manufacturer article number 3SU1100-0AB10-1BA0. Front-plate protection is IP66, IP67 and IP69(IP69K), with IP20 at the terminals.
Control panels in wash-down bays, food and beverage plant and exposed outdoor equipment take water, dust and vibration every day. When an actuator seal lets go, water tracks into the enclosure and the whole station is out until the button is swapped. The PB-P-BLK seals to IP66, IP67 and IP69K on the front-plate side, which covers hose-down and high-pressure, high-temperature cleaning. Siemens rates mechanical and electrical endurance at a typical 10 million switching cycles, so a button pressed hundreds of times a shift keeps working.
Panel builders specify the Sirius ACT range because the PB-P-BLK arrives as a complete unit. The actuator, front ring, holder and one NO contact module sit under a single part number, so there is nothing to build up on the bench. Black is the workhorse actuator on a control station, and on the PB-P-BLK the button matches the standard black front ring for a clean panel front. The 22.3mm round cutout is the standard punch size across the range, so the black button drops into the same hole as every other 22mm Sirius ACT actuator. Stock control stays simple, because the actuator, holder and contact module each carry a Siemens article number of their own.
Features
- 22mm round flat actuator — black plastic button with an outer diameter of 29.45mm, operating on momentary contact so the circuit makes only while it is held.
- Complete unit supply — the PB-P-BLK ships with the actuator, standard black front ring, holder and one NO contact module under one part number.
- Matched black front ring — the actuating element and the standard front ring are both black, so the button reads as a single black insert in the front plate.
- 500V AC/DC rating — rated operating voltage runs 5V to 500V at AC 50Hz, AC 60Hz and DC, with a 500V rated insulation voltage.
- 10A thermal current — carries 10A, with a 10A continuous current listed behind a C-characteristic MCB where prospective short-circuit current stays below 400A.
- IP66, IP67 and IP69K front protection — the front-plate side resists dust ingress, temporary immersion and high-pressure, high-temperature wash-down.
- IP20 at the terminals — terminal-side protection is IP20 only, so the PB-P-BLK depends on the panel behind the front plate for enclosure rating.
- NEMA type ratings — carries NEMA 1, 2, 3, 3R, 4, 4X, 12 and 13 alongside the IP figures for panels built to export specification.
- 10 million switching cycles — Siemens lists typical mechanical and electrical endurance at 10 million operations, at up to 3600 operations per hour.
- Screw terminal connection — accepts 2 x 1.0 to 1.5mm2 solid or 2 x 0.5 to 1.5mm2 finely stranded conductors, tightened to 0.8 to 0.9 N.m.
- Shock and vibration rated — 50g half-sine shock over 11ms to IEC 60068-2-27, and 5g vibration across 10 to 500Hz to IEC 60068-2-6.
- -25 to +70 deg C operating range — rated for operation from -25 to +70 deg C and storage from -40 to +80 deg C, at pollution degree 3.
Where to use
- Machine control panels — the PB-P-BLK mounts into a 22.3mm punched hole on the front plate of a machine control station.
- Wash-down food and beverage plant — IP69K front protection suits process areas cleaned with high-pressure, high-temperature water.
- Outdoor and exposed plant — IP66 and IP67 front sealing covers pump stations, irrigation control and other panels open to dust and rain.
- Motor start and jog stations — one NO contact module suits a start, jog or reset function wired into a control circuit up to 500V.
- Rail and rolling stock equipment — shock and vibration ratings to DIN EN 61373 Category 1 Class B cover railway applications.
- Marine and shipping switchgear — the PB-P-BLK carries marine and shipping test certificates listed on the Siemens datasheet.
- General-purpose operator stations — the black actuator keeps a uniform look where no function-specific colour is called for on the panel.
- Export-specification switchboards — NEMA 4X and 12 type ratings suit panels built for North American sites.
The PB-P-BLK is not an illuminated push-button: the datasheet lists no light source and zero LED modules. It is also momentary contact only, so it does not latch or hold a maintained position. Siemens lists product function positive opening as No, so the PB-P-BLK is not specified for emergency stop duty. Terminal-side protection is IP20, so the IP66, IP67 and IP69K figures apply to the front-plate side only.
