Schneider Electric 21104 motor protection switch 3P 1.00A P25M content_copy

The P25M motor protection circuit breaker from the Acti 9 series by Schneider Electric is a circuit breaker designed for use in industrial and commercial installations, specifically engineered for the protection of AC and DC motors. The device features a thermal-magnetic tripping technology that responds to both overloads and short circuits. With a rated current of 1 A and a 3-pole configuration (3P), it is suitable for use in three-phase networks. The operating voltage covers multiple ranges: 230–240 V AC, 400–415 V AC, 440 V AC, 500 V AC, and 690 V AC, all at 50/60 Hz. The rated insulation voltage is 690 V AC, ensuring suitability for applications with higher electrical stress. The usage category AC-3 according to IEC 60947-2 confirms its suitability for motor operation, including switching during start-up and shutdown phases.

Applications
This circuit breaker is designed for use in industrial installations where reliability and safety in controlling and protecting electric motors are critical. It is suitable for applications in manufacturing, process engineering, and building technology, where motor protection in electrical distributions is required. The integrated locking mechanism enables secure deactivation of the device, which is advantageous during maintenance work or when servicing downstream system components.

Functions and Equipment in Detail
The device includes a contact position indicator that visually signals the state of the contacts (ON/OFF). This facilitates checking the switching position and enhances safety during maintenance. Control is performed via a toggle switch, which allows for manual trip testing. The magnetic trip threshold is set at 12 times the rated current (12 x In), ensuring rapid response to short-circuit currents. The electrical life expectancy is 100,000 cycles under AC-3 operation, indicating high durability and long service life.

Technology Explained Simply
The thermal-magnetic tripping technology combines two protection principles: the thermal component responds to sustained overloads by activating the tripping mechanism through thermal expansion. The magnetic component protects against sudden, high current surges such as short circuits by immediately tripping. This combination ensures precise and reliable protection. The terminals are designed for cable cross-sections from 1 to 6 mm², suitable for both solid and flexible conductors. The tightening torque is 1.7 Nm, ensuring a secure and lasting connection. The terminals are rated to IP20, providing protection against contact and against solid foreign objects.

Compatibility and Accessories
The circuit breaker is designed for mounting on a 35 mm symmetrical DIN rail and conforms to the 9 mm pitch (5 pitches). It is compatible with various accessory modules, including auxiliary contacts (e.g. 21121, 21119, 21120, 21116), overload release units (e.g. 21127, 21128), and overvoltage release units (e.g. 21129, 21130). These modules extend functionality, for example by signaling switching states or integrating into higher-level control systems. The use of busbar systems such as GV2G254 or GV2G454 enables flexible and modular installation.

Mounting and Installation
Mounting is performed on a standard DIN rail (35 mm), enabling easy integration into existing distributions. Dimensions are 89 mm (height), 45 mm (width), and 70 mm (depth). The operating temperature range is 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, with permissible relative humidity up to 95 % at 55 °C. The overvoltage category III and pollution degree 2 according to IEC 60947-2 ensure suitability for environments with increased electrical stress.

Operational Advantages
The combination of thermal-magnetic tripping, high service life, and modular expansion options makes the P25M a robust and flexible protection device. The integrated locking mechanism and clear indication of switching position enhance operational safety. Compatibility with various accessory modules allows customized adaptation to specific requirements. Certifications according to EN/IEC 60947-2, as well as product certifications by CEBEC, DEMKO, SEMKO, FIMKO, and NEMKO, 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
[Ui] rated insulation voltage	690 V AC 50/60 Hz conforming to EN/IEC 60947-2
Control type	Manual tripping test; Toggle
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	CEBEC; DEMKO; SEMKO; FIMKO; NEMKO
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	1 A
Network type	AC
Trip unit technology	Thermal-magnetic
Curve code	K
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	4.7 cm
Package 1 Width	8.5 cm
Package 1 Length	9.5 cm
Package 1 Weight	228 g
Unit Type of Package 2	S02
Number of Units in Package 2	24
Package 2 Height	15 cm
Package 2 Width	30 cm
Package 2 Length	40 cm
Package 2 Weight	5.824 kg
Unit Type of Package 3	P06
Number of Units in Package 3	384
Package 3 Height	75 cm
Package 3 Width	60 cm
Package 3 Length	80 cm
Package 3 Weight	98.356 kg

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