M3 250L - thermal-magnetic Mccb 4P - Icu= 100kA - In= 250A

Electrical Systems / Circuit Protection

Power: Not specified
CCT: Not specified
IP rating: IP30
Dimming: Not specified

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Model / reference · T734L250

A closer look

Design & purpose

M3 250L - thermal-magnetic moulded case circuit breaker 4P - Icu= 100kA - In= 250A Manufacturer-selected illustration for T734L250; the visible label or rating may show another variant. The specifications and quotation refer to T734L250.

The details

Technical specifications

Dimensions

Width: 140 mm
Height: 165 mm
Depth: 112 mm

Electrical & dimming

Rated permanent current Iu: 250 A
Rated voltage (Min-Max): 230-690 V
Overload release current setting (Min-Max): 200-250 A
With integrated under voltage release: No
Position of connection for main current circuit: Front side
Type of control element: Wing knob
Voltage type: AC
Frequency (Min-Max): 50-60 Hz
Electric supplying direction: Not applicable

Materials

Colour: Grey

Installation & protection

Integrated earth fault protection: No
Suitable for DIN rail (top hat rail) mounting: No
DIN rail (top hat rail) mounting optional: No
Complete device with protection unit: Yes
Degree of protection (IP): IP30
degree of impact strength (IK): Not applicable
Operating / setting temperature (Min-Max): -5-70 °C
Storage temperature (Min-Max): -25-85 °C

Other details

Manufacturer model: T734L250
Catalogue reference: BT-T734L250
EAN: 8005543684788
Manufacturer category: Low-voltage protection and power distribution/Megatiker moulded case circuit breakers/Thermal magnetic circuit breakers/M3 250 thermal magnetic
Adjustment range undelayed short-circuit release (Min-Max): 1250-2500 A
Device construction: Built-in device fixed built-in technique
Type of electrical connection of main circuit: Bolt connection
Number of auxiliary contacts as normally closed contact: 1
Number of auxiliary contacts as normally open contact: 1
Number of auxiliary contacts as change-over contact: 1
With switched-off indicator: Yes
Number of poles: 4
Motor drive integrated: No
Motor drive optional: Yes
Terminal marking indication: No
RAL-number: 7035
Terminals capacity (Min-Max): 2.5-120 mm²
Cable nature for connection: Flexible or rigid
Label space/information surface: No
Product reference: https://www.bticino.com/products/bt-t734l250
Source: https://www.bticino.com/products/bt-t734l250
Checked: 2026-10-18
Manufacturer image source: https://catalogo.bticino.it/prodotto/soluzioni-per-la-distribuzione-dellenergia-bassa-tensione-interruttori-quadri-armadi-centralini-e-sistemi-di-cablaggio/interruttori-di-protezione-modulari-scatolati-aperti-e-sezionatori/megatiker---interruttori-scatolati/m3-250-magnetotermici/BTI-T734L250-IT