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Inosaki proudly stands as one of the largest distributors of Phoenix Contact products, offering a comprehensive range of terminal blocks, interface modules, power supplies, and relays.

Our Best-Selling Terminal Blocks: Feed-Through, Fuse Modular, Spring Cage, Double Level, Multi-Level

Series Models: PT Series, ST Series, TB Series, UT Series, and UK Series, PTV Series, UKH Series, Micro Series.

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Discover industry-leading Phoenix Contact power supplies, such as:

QUINT Power – Premium performance for critical systems
STEP Power – Compact design for space-saving applications
Trio Power – Rugged and reliable for industrial needs
UNO Power – Cost-effective and efficient

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Feed-through terminal block, nom. voltage: 800 V, nominal current: 24 A, connection method: Spring-cage connection, number of connections: 2, cross section: 0.08 mm² – 4 mm², AWG: 28 – 12, width: 5.2 mm, color: blue, mounting type: NS 35/7,5, NS 35/15

General

Article Number	3031225
Number of levels	1
Number of connections	2
Potentials	1
Nominal cross section	2.5 mm²
Color	blue
Insulating material	PA
Flammability rating according to UL 94	V0
Area of application	Railway industry
	Machine building
	Plant engineering
	Process industry
Mounting type	NS 35/7,5
Rated surge voltage	8 kV
Degree of pollution	3
Overvoltage category	III
Insulating material group	I
Maximum load current	31 A (with 4 mm² conductor cross section)
Nominal current I_N	24 A (at 2.5 mm²)
Nominal voltage U_N	800 V
Open side panel	Yes
Relative insulation material temperature index (Elec., UL 746 B)	130 °C
Temperature index of insulation material (DIN EN 60216-1 (VDE 0304-21))	125 °C
Static insulating material application in cold	-60 °C
Surface flammability NFPA 130 (ASTM E 162)	passed
Specific optical density of smoke NFPA 130 (ASTM E 662)	passed
Calorimetric heat release NFPA 130 (ASTM E 1354)	27,5 MJ/kg
Smoke gas toxicity NFPA 130 (SMP 800C)	passed
Fire protection for rail vehicles (DIN EN 45545-2) R22	HL 1 – HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R23	HL 1 – HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R24	HL 1 – HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R26	HL 1 – HL 3

Dimensions

Width	5.2 mm
End cover width	2.2 mm
Length	48.5 mm
Height NS 35/7,5	36.5 mm
Height NS 35/15	44 mm

Connection data

Connection	1 level
Connection method	Spring-cage connection
Stripping length	8 mm … 10 mm
Connection in acc. with standard	IEC 60947-7-1
Conductor cross section solid min.	0.08 mm²
Conductor cross section solid max.	4 mm²
Conductor cross section AWG min.	28
Conductor cross section AWG max.	12
Conductor cross section flexible min.	0.08 mm²
Conductor cross section flexible max.	2.5 mm²
Min. AWG conductor cross section, flexible	28
Max. AWG conductor cross section, flexible	14
Conductor cross section flexible, with ferrule without plastic sleeve min.	0.14 mm²
Conductor cross section flexible, with ferrule without plastic sleeve max.	2.5 mm²
Conductor cross section flexible, with ferrule with plastic sleeve min.	0.14 mm²
Conductor cross section flexible, with ferrule with plastic sleeve max.	2.5 mm²
Two conductors with the same cross section, flexible, with TWIN ferrules, with plastic sleeve, maximum	0.5 mm²
Connection in acc. with standard	IEC/EN 60079-7
Conductor cross section solid min.	0.08 mm²
Conductor cross section solid max.	4 mm²
Conductor cross section AWG min.	28
Conductor cross section AWG max.	12
Conductor cross section flexible min.	0.08 mm²
Conductor cross section flexible max.	2.5 mm²
Internal cylindrical gage	A3

Ambient conditions

Operating temperature	-60 °C … 105 °C (max. short-term operating temperature 130°C)
Ambient temperature (storage/transport)	-25 °C … 60 °C (for a short time, not exceeding 24 h, -60 °C to +70 °C)
Permissible humidity (storage/transport)	30 % … 70 %
Ambient temperature (assembly)	-5 °C … 70 °C
Ambient temperature (actuation)	-5 °C … 70 °C