Schneider Electric 21113 motor protection switch 3-pole 25A P25M content_copy

The P25M motor protection circuit breaker from Schneider Electric, type 21113, is a circuit breaker from the Acti 9 series, specifically designed for use in three-phase installations for the protection function of electric motors. The device features a 3-pole configuration (3P) with a rated current of 25 A and is designed for alternating and three-phase current applications. The tripping technology is based on a thermomagnetic principle, responding to both overloads and short circuits. The K curve defines the tripping characteristic, with the magnetic tripping threshold set at 12 times the rated current. This ensures precise and reliable disconnection during sudden current surges.

Applications

The switch is intended for use in industrial and commercial installations, particularly for the protection function of electric motors. The usage category AC-3 according to IEC 60947-2 makes it suitable for operation with three-phase motors, with an electrical life of 100,000 switching cycles. The operating voltage includes several nominal voltages: 230–240 V, 400–415 V, 440 V, 500 V, and 690 V AC at 50/60 Hz. The rated insulation voltage is 690 V AC, confirming suitability for insulation requirements as per IEC 60947-2. The operating temperature ranges from -20 °C to 60 °C, with storage temperature from -40 °C to 80 °C. The maximum operating altitude is 2,000 m above sea level.

Functions and Equipment in Detail

The device features a contact position indicator, visually signaling the state of the contacts (ON/OFF). This enables safe work on downstream parts of the installation, as fully open contacts are indicated by the OFF marking on the toggle handle. Control is performed via a toggle switch, supplemented by a manual trip test, which allows checking the functionality of the tripping unit. The integrated locking mechanism enables secure locking of the switch, for example, during maintenance work. The terminals are designed for cable cross-sections from 1 to 6 mm² (rigid and flexible), with a tightening torque of 1.7 Nm. The terminals are rated to IP20.

Technology Explained Simply

The thermomagnetic tripping technology combines a thermal and a magnetic tripping element. The thermal part responds to sustained overloads by activating the tripping mechanism through thermal expansion. The magnetic part immediately disconnects during sudden, high current surges (short circuit). The breaking capacities vary depending on voltage level: 50 kA at 230–240 V, 15 kA at 400–415 V, 6 kA at 440 V, 4 kA at 500 V, and 3 kA at 690 V AC. The rated operational breaking capacities are 50 kA (230–240 V), 6 kA (400–415 V), 3 kA (440 V and 500 V), and 2.25 kA (690 V). The overvoltage category III and drip proof class 2 (according to IEC 60947-2) ensure reliable operation under industrial conditions.

Compatibility and Accessories

The switch is designed to be mounted on a 35 mm symmetrical DIN rail and conforms to the 9 mm pitch, with a height of 89 mm, width of 45 mm, and depth of 70 mm. It is compatible with various accessory modules, including overvoltage tripping units (e.g. 21129 for 220/240 V, 21130 for 380/415 V), load current tripping units (e.g. 21127, 21128), auxiliary contacts (e.g. 21120, 21121, 21116, 21119), and short-circuit current limiters (e.g. 21115). These modules extend functionality, for example, by adding signaling, fault tripping, or current monitoring.

Mounting and Installation

Mounting is done on a standard 35 mm DIN rail, with an installation width of 5 pitches (45 mm). Power supply is possible from both top and bottom, increasing flexibility during installation. The snap-action switching ensures wear-free switching of contacts. The locking options allow secure securing of the device, for example, during maintenance work. Relative humidity up to 95 % at 55 °C is permissible.

Advantages in Operation

The switch offers high operational safety through the combination of thermal and magnetic tripping. Clear indication of switching position and integrated locking increase safety during maintenance work. The high electrical life of 100,000 cycles under AC-3 operation ensures long service life. Compatibility with various accessory modules allows flexible adaptation to specific requirements. Certifications according to EN/IEC 60947-2, as well as product certifications by DEMKO, FIMKO, NEMKO, SEMKO, and CEBEC, confirm compliance with international standards.

Complementary
Network frequency	50/60 Hz
[Ue] rated operational voltage	440 V AC 50/60 Hz; 230...240 V AC 50/60 Hz; 400...415 V AC 50/60 Hz; 500 V AC 50/60 Hz; 690 V AC 50/60 Hz
Magnetic tripping limit	12 x In
[Ics] rated service breaking capacity	2.25 kA conforming to EN/IEC 60947-2 - 690 V AC 50/60 Hz; 3 kA conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz; 3 kA conforming to EN/IEC 60947-2 - 500 V AC 50/60 Hz; 50 kA conforming to EN/IEC 60947-2 - 230...240 V AC 50/60 Hz; 6 kA conforming to EN/IEC 60947-2 - 400...415 V AC 50/60 Hz
[Ui] rated insulation voltage	690 V AC 50/60 Hz conforming to EN/IEC 60947-2
Control type	Toggle; Manual tripping test
Local signalling	ON/OFF indication
Mounting mode	Clip-on
Mounting support	35 mm symmetrical DIN rail
9 mm pitches	5
Height	89 mm
Width	45 mm
Depth	70 mm
Net weight	0.26 kg
Electrical durability	AC-3: 100000 cycles AC 50/60 Hz conforming to IEC 60947-2
Provision for padlocking	Padlockable
Locking options description	Integrated padlocking
Connections - terminals	Clamps terminal2 cable(s) 1…6 mm² rigid; Clamps terminal2 cable(s) 1…6 mm² flexible
Tightening torque	1.7 N.m
Earth-leakage protection	Without
Contact position indicator
Contractual warranty
Warranty (in months)	18
Environment
Standards	EN/IEC 60947-2
Product certifications	DEMKO; FIMKO; NEMKO; SEMKO; CEBEC
Overvoltage category	III
Tropicalisation	2 conforming to IEC 60947-2
Relative humidity	95 % at 55 °C
Operating altitude	2000 m
Ambient air temperature for operation	-20…60 °C
Ambient air temperature for storage	-40…80 °C
Logistical informations
Country of origin	FR
Main
Range of product	P25M
Range	Acti9
Product name	Acti9 P25M
Product or component type	Miniature circuit-breaker
Device short name	P25M
Device application	Motor
Poles description	3P
Number of protected poles	3
[In] rated current	25 A
Network type	AC
Trip unit technology	Thermal-magnetic
Curve code	K
Breaking capacity	6 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2; 15 kA Icu at 400...415 V AC 50/60 Hz conforming to EN/IEC 60947-2; 3 kA Icu at 690 V AC 50/60 Hz conforming to EN/IEC 60947-2; 4 kA Icu at 500 V AC 50/60 Hz conforming to EN/IEC 60947-2; 50 kA Icu at 230...240 V AC 50/60 Hz conforming to EN/IEC 60947-2
Utilisation category	AC-3 conforming to IEC 60947-2
Suitability for isolation	Yes conforming to IEC 60947-2
Packing Units
Unit Type of Package 1	PCE
Number of Units in Package 1	1
Package 1 Height	5.000 cm
Package 1 Width	8.500 cm
Package 1 Length	9.500 cm
Package 1 Weight	286.000 g
Unit Type of Package 2	S02
Number of Units in Package 2	24
Package 2 Height	15.000 cm
Package 2 Width	30.000 cm
Package 2 Length	40.000 cm
Package 2 Weight	7.152 kg

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