Exact configuration
Siemens 3TF series, complete model 3TF4522-0XM0. The 22 contact arrangement provides 2 NO + 2 NC auxiliary contacts.
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Switching duty
The 3TF45 frame is rated for 18.5 kW at 400 V AC-3 and 20 kW at 415 V AC-3.
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Mechanical format
AC-operated screw-terminal version; body dimensions 82 x 103 x 104 mm and approximate weight 760 g.
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Mounting
Snap mounting on a 35 mm standard rail or surface mounting with two M4 screws.
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Complete model
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3TF4522-0XM0
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Brand
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Siemens
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Product family
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3TF45 AC contactors
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Product type
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Three-pole AC contactor with 2 NO + 2 NC auxiliary contacts
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Connection
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Screw terminals
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Dimensions (W x H x D)
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82 x 103 x 104 mm, AC-operated screw-terminal version
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Weight
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Approx. 760 g, AC-operated
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Mounting
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35 mm standard mounting rail or plain surface with two M4 screws
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Mounting footprint
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45/49 x 75 mm
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Main circuit insulation voltage
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AC 690 V
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Operational current AC-1
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55 A at 55 deg C
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Continuous current
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45 A, open and enclosed type
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Motor rating AC-3 at 400 V
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18.5 kW
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Motor rating AC-3 at 415 V
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20 kW
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Auxiliary contact arrangement
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2 NO + 2 NC
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Auxiliary circuit insulation voltage
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AC 690 V
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Auxiliary operational current AC-11
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5.6 A at AC 230 V
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Protection rating
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IP00 to IEC 60529; finger-safe to DIN VDE 0106, Part 100
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Operating temperature
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-25 to +55 deg C
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Storage temperature
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-50 to +80 deg C
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Standards
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DIN VDE 0660; IEC 60947
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AC-3 motor ratings
11 kW at 230 V; 12 kW at 240 V; 18.5 kW at 400 V; 20 kW at 415 V; 25 kW at 500 V; 23 kW at 690 V.
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Main circuit
Rated insulation voltage AC 690 V. Rated operational current AC-1 is 55 A at 55 deg C.
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Horsepower ratings
Three-phase motors at 60 Hz: 10 hp at 200 V, 15 hp at 230 V, and 25 hp at 460 V or 575 V.
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Short-circuit coordination
gL/gG fuse links: 80 A for assignment type 1 and 63 A for assignment type 2; 25 A for the listed non-welding conditions.
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Main poles
Three main switching poles use terminals 1L1-2T1, 3L2-4T2, and 5L3-6T3.
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Auxiliary contacts
2 NO contacts at 13-14 and 43-44; 2 NC contacts at 21-22 and 31-32.
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Main conductors
Solid 1 to 16 mm2; stranded 2.5 to 25 mm2 for one terminal connection. Strip length 10 mm; tightening torque 2.5 to 3.0 Nm.
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Auxiliary conductors
Solid 2 x 0.5 to 1 mm2 or 2 x 1 to 2.5 mm2. Strip length 10 mm; tightening torque 0.8 to 1.4 Nm.
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Rail or panel mounting
Snap the contactor onto a 35 mm standard mounting rail to DIN EN 50022, or fix it to a plain surface with two M4 screws, plain washers, and spring washers.
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Permissible position
Vertical mounting is permitted, with lateral deviation up to 90 deg and forward or backward inclination up to 22.5 deg.
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Clearance and enclosure
Maintain the minimum clearances shown in the dimensional drawing. Use an enclosure where dirt, dust, or aggressive atmosphere may reach the contactor.
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Terminal preparation
Use 75 deg C copper wire. Tighten every terminal screw, including unused screws, and follow the specified conductor cross-sections and torques.
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Inspection
After a short circuit, inspect the main contacts and arc chute. Do not operate the device by pressing the position indicator while voltage and load are applied.
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Replaceable parts
Main contacts, arc chute, magnet coil, and auxiliary contact blocks are replaceable. Use original spare parts.
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Contact condition
Dark or rough contacts can remain functional. Do not refinish or grease them; replace them when carrier material becomes visible.
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Cleaning and return to service
Remove dust by suction. Keep magnet pole faces clean, and return the contactor to service only with the arc chute fitted.
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1
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How can a buyer verify that the offered item is exactly 3TF4522-0XM0?
Request clear photos of the front rating plate, side label, coil label, and terminal markings. The complete code must read 3TF4522-0XM0, and the contact layout must show three main poles plus 2 NO and 2 NC auxiliary contacts.
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2
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How can New, Used, and Refurbished condition be distinguished for this contactor?
Ask for current high-resolution photos of the arc chute, screw terminals, housing, position indicator, and coil label. Terminal marks, tool wear, dust, discoloration, or replaced contact parts can indicate prior service or refurbishment.
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3
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How should a purchaser check whether the supplier is legitimate and reliable?
Verify the registered company identity, business address, bank-account beneficiary, traceable contact details, and a verifiable sales history. The quotation and invoice should state the exact model 3TF4522-0XM0 without a shortened code.
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4
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Which specifications should an engineer confirm before purchase?
Confirm the exact coil rating on the device nameplate, the 2 NO + 2 NC auxiliary arrangement, screw-terminal conductor ranges, 82 x 103 x 104 mm body size, 45/49 x 75 mm mounting footprint, 18.5 kW rating at 400 V AC-3, and IP00 protection.
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5
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What physical evidence should be requested before payment?
Request dated photos or video showing the complete nameplate, coil label, terminals 1L1 through 6T3, auxiliary terminals 13-14, 21-22, 31-32, and 43-44, the arc chute, and the actual packaging label.
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6
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Can a similar 3TF45 model or a different suffix replace 3TF4522-0XM0?
Not automatically. A different suffix or contact code may change the coil rating, terminal format, or auxiliary contact arrangement. Replacement is acceptable only after the engineer confirms the complete code, coil data, 2 NO + 2 NC contacts, dimensions, mounting, and load ratings.
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EN
