(!)Due to Microsoft's end of support for Internet Explorer 11 on 15/06/2022, this site does not support the recommended environment.
Instead, please kindly use other browsers like Google Chrome, Microsoft Edge or Mozilla Firefox.

7 Million Products, 2,000 Brands.
50,000 Stock items for Same Day Ship Out.

All Categories

Search by Application

inCAD Library

Brands

Brand List

Webcode Seach | Series: #CODE

Keyword suggestions

Part number suggestions

Discontinued Products

Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

How can we improve?

How can we improve?

Feedback

Name (Optional)

E-mail Address (Optional)

Tel (Optional)

Thank you for your time.
Your feedback is essential for our continuous improvement
Privacy Policy

Thank you for your cooperation.

Thank you for your time.
Your feedback is essential for our continuous improvement
Please use the inquiry form.

Privacy Policy

NA3UCSB UL / CE Supported with Shield (Part Numbers)

Volume Discount

MISUMI

- Power cable NA3UCSB series, UL / CE Supported with Shield from MISUMI.
- 300 V shielded cable, ULAWM2517/c-UL/CE standard compliant.
- This product is compatible with "UL Traceability Program / Processed Wire". (c-UL is not compatible)
- Color and softness may vary slightly due to manufacturer changes.
- Electrical Appliance and Material Safety Law certificate is not obtained.
- The number of cores can be selected up to 20 cores.
- The Insulation body materials are made of PVC.

c-UL
CE-Compliant
VW-1
FT-1
ULAWM
Oil-Resistant
Strand Wire
Single Shield
300 V
European Standards 300 / 500 V

· This product is compatible with "UL Traceability Program / Processed Wire". (c-UL is not compatible)
* For cables in stock, please keep in mind that because we cut them to the specified size, they cannot be canceled or returned.
* All unit prices are per meter.
Unit Price Calculation Method
[Formula: Last digits of model number (m) x unit price per meter above]
* Color and softness may vary slightly due to manufacturer changes.

Electrical Appliance and Material Safety Law certificate is not obtained.

Part Number

Configured Part Number is shown.

Product specification
Part Numbers

Specifications

NA3UCSB UL / CE Supported with Shield:Related Image

Model Number	AWG Size	Number of Cores
NA3UCSB	20	2
		3
		4
		6
		8
		10
		12
		16
		20
	18	2
		3
		4
		6
		8
		10
		12
	16	2
		3
		4
		6
		8
		10
	14	2
		3
		4

Be sure to read the following precautions when you place an order.
* Length in "m" is included in our model numbers. Always specify quantity as number of units, not as meters.
* For the latest information regarding standard unit price, quantity slide unit price, shipment days, etc., refer to the Misumi VONA e-catalog.
*1 Stock products are indicated with T or A in the price column at right.
*2 All unit prices above are per meter.
Unit Price Calculation Method [Formula: Last digits of model number (m) x unit price per meter above]
*3 Please note that when ordering 1000 m and 500 m, the order will be delivered as 100 m windings (we cannot accept orders for single cables).

More Information

Specifications

Model Number	AWG Size	Number of Cores	Estimated Section Area (mm²)^*1	Twisted Structure (See Figure)	Number of Wire Cores	Finished Outer Diameter (mm) ^*5	Approximate Mass kg / km	Electrical Properties				Conductor			Insulation		Wire Core Outer Diameter Approx. (mm)	Sheath		Specification	Sample Provided^{* 4}
Model Number	AWG Size	Number of Cores	Estimated Section Area (mm²)^*1	Twisted Structure (See Figure)	Number of Wire Cores	Finished Outer Diameter (mm) ^*5	Approximate Mass kg / km	Allowable Current A (30°C)^{* 2}	Conductor Resistance Ω / km (20°C)	Insulation Properties MΩkm (20°C)	Withstand Voltage V / 5 Min	Structure Pc / mm	Outer Diameter Approx. (mm)	Plating ^*3	Thickness (mm)	Material ^*3	Wire Core Outer Diameter Approx. (mm)	Thickness (mm)	Material ^*3	Specification	Sample Provided^{* 4}
NA3UCSB	20	2	0.5	Core / Layer Stranding	2	7	63	9	35.4	50	2000	21/0.18	0.95	Tin	0.6	PVC	2.15	1	PVC	ULAWM2517 c-UL CE Supported	◎
		3			3	7.3	77	7										1			◎
		4			4	7.9	88	6										1			◎
		6			6	9.2	121	5										1			◎
		8			8	10.8	159	4										1.1			◎
		10			10	11.8	183	4										1.2			◎
		12			12	12.1	207	3										1.2			◎
		16			16	13.6	268	3										1.3			◎
		20			20	15.1	323	3										1.4			◎
	18	2	0.75		2	7.5	77	12	22.3			34/0.18	1.21		0.6		2.41	1			◎
		3			3	7.9	91	10										1			◎
		4			4	8.5	108	8										1			◎
		6			6	10	152	7										1			◎
		8			8	11.9	209	6										1.2			◎
		10			10	12.8	236	5										1.2			◎
		12			12	13.5	281	5										1.3			◎
	16	2	1.25		2	8.5	100	17	14			53/0.18	1.51		0.7		2.91	1			◎
		3			3	9	120	13										1			◎
		4			4	9.8	150	12										1			◎
		6			6	11.9	217	9										1.2			◎
		8			8	14	292	8										1.3			◎
		10			10	15.3	345	7										1.4			◎
	14	2	2.0		2	9.8	138	23	8.75			41/0.26	1.92		0.8		3.52	1			◎
		3			3	10.6	177	19										1.1			◎
		4			4	11.5	210	16										1.1			◎

*1 The size conversion is for reference only. Refer to the comparison table on >>Click here for details.
*2 The value of allowable current is to be used only as a reference value and is not guaranteed.
*3 How to View Materials
[Plating] Tin... Tin Plated Annealed Copper Wire
[Materials] PVC... Polyvinyl Chloride; PE... Polyethylene-based Material;
P... Polyester-based Material; Fluorine... Various Fluorine Resins; *... Other
*4 For the outer diameter size of cables, wire sheath (coat), etc., refer to "Finished Outer Diameter" in the table above.

Current Reduction Factor

Ambient Temperature (°C)	30	40	50	60	70	80	90	100
Current Reduction Factor	1.00	0.90	0.75	0.73	0.65	0.56	0.44	0.37

Allowable current value indicates the calculated value of 1 cable laid aboveground in ambient temperature of 30°C, and is not a guaranteed value.
If the ambient temperature is 30 °C or above, the above current reduction factor is multiplied by the allowable current.
(Example) Allowable current at AWG20 2-core when the ambient temperature is 40°C
9 × 0.9 = 8.1 (A)

NA3UCSB UL / CE Supported with Shield:Related Image

: 30; 60; 90

Part Number
NA3UCSB-14-3-81
NA3UCSB-14-3-82
NA3UCSB-14-3-83
NA3UCSB-14-3-84
NA3UCSB-14-3-85
NA3UCSB-14-3-86
NA3UCSB-14-3-87
NA3UCSB-14-3-88
NA3UCSB-14-3-89
NA3UCSB-14-3-90
NA3UCSB-14-3-91
NA3UCSB-14-3-92
NA3UCSB-14-3-93
NA3UCSB-14-3-94
NA3UCSB-14-3-95
NA3UCSB-14-3-96
NA3UCSB-14-3-97
NA3UCSB-14-3-98
NA3UCSB-14-3-99
NA3UCSB-14-3-100
NA3UCSB-14-4-1
NA3UCSB-14-4-2
NA3UCSB-14-4-3
NA3UCSB-14-4-4
NA3UCSB-14-4-5
NA3UCSB-14-4-6
NA3UCSB-14-4-7
NA3UCSB-14-4-8
NA3UCSB-14-4-9
NA3UCSB-14-4-10
NA3UCSB-14-4-11
NA3UCSB-14-4-12
NA3UCSB-14-4-13
NA3UCSB-14-4-14
NA3UCSB-14-4-15
NA3UCSB-14-4-16
NA3UCSB-14-4-17
NA3UCSB-14-4-18
NA3UCSB-14-4-19
NA3UCSB-14-4-20
NA3UCSB-14-4-21
NA3UCSB-14-4-22
NA3UCSB-14-4-23
NA3UCSB-14-4-24
NA3UCSB-14-4-25
NA3UCSB-14-4-26
NA3UCSB-14-4-27
NA3UCSB-14-4-28
NA3UCSB-14-4-29
NA3UCSB-14-4-30
NA3UCSB-14-4-31
NA3UCSB-14-4-32
NA3UCSB-14-4-33
NA3UCSB-14-4-34
NA3UCSB-14-4-35
NA3UCSB-14-4-36
NA3UCSB-14-4-37
NA3UCSB-14-4-38
NA3UCSB-14-4-39
NA3UCSB-14-4-40
NA3UCSB-14-4-41
NA3UCSB-14-4-42
NA3UCSB-14-4-43
NA3UCSB-14-4-44
NA3UCSB-14-4-45
NA3UCSB-14-4-46
NA3UCSB-14-4-47
NA3UCSB-14-4-48
NA3UCSB-14-4-49
NA3UCSB-14-4-50
NA3UCSB-14-4-51
NA3UCSB-14-4-52
NA3UCSB-14-4-53
NA3UCSB-14-4-54
NA3UCSB-14-4-55
NA3UCSB-14-4-56
NA3UCSB-14-4-57
NA3UCSB-14-4-58
NA3UCSB-14-4-59
NA3UCSB-14-4-60
NA3UCSB-14-4-61
NA3UCSB-14-4-62
NA3UCSB-14-4-63
NA3UCSB-14-4-64
NA3UCSB-14-4-65
NA3UCSB-14-4-66
NA3UCSB-14-4-67
NA3UCSB-14-4-68
NA3UCSB-14-4-69
NA3UCSB-14-4-70

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Conductor Cross Section (mm²)	Number Of Cores (Core)	AWG size (AWG)	Grounding Wire	Overall Length (m)	Finished outer diameter (mm)
SGD 995.38	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	81	10.6
SGD 1,007.55	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	82	10.6
SGD 1,019.73	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	83	10.6
SGD 1,031.90	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	84	10.6
SGD 1,044.08	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	85	10.6
SGD 1,056.25	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	86	10.6
SGD 1,068.43	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	87	10.6
SGD 1,080.60	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	88	10.6
SGD 1,092.78	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	89	10.6
SGD 1,104.95	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	90	10.6
SGD 1,117.13	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	91	10.6
SGD 1,129.30	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	92	10.6
SGD 1,141.48	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	93	10.6
SGD 1,153.65	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	94	10.6
SGD 1,165.83	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	95	10.6
SGD 1,178.00	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	96	10.6
SGD 1,190.18	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	97	10.6
SGD 1,202.34	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	98	10.6
SGD 1,214.52	1 Piece(s)		4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	99	10.6
SGD 1,186.74	1 Piece(s)	Available	4 Day(s) or more	-	2	3	14	GY (green/yellow) colored	100	10.6
SGD 23.17	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	1	11.5
SGD 37.15	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	2	11.5
SGD 54.23	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	3	11.5
SGD 72.31	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	4	11.5
SGD 90.39	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	5	11.5
SGD 108.48	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	6	11.5
SGD 126.56	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	7	11.5
SGD 144.63	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	8	11.5
SGD 162.71	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	9	11.5
SGD 156.32	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	10	11.5
SGD 171.96	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	11	11.5
SGD 187.59	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	12	11.5
SGD 203.22	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	13	11.5
SGD 218.85	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	14	11.5
SGD 234.49	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	15	11.5
SGD 250.12	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	16	11.5
SGD 265.76	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	17	11.5
SGD 281.39	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	18	11.5
SGD 297.01	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	19	11.5
SGD 291.85	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	20	11.5
SGD 306.44	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	21	11.5
SGD 321.03	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	22	11.5
SGD 335.62	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	23	11.5
SGD 350.22	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	24	11.5
SGD 364.81	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	25	11.5
SGD 379.40	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	26	11.5
SGD 393.99	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	27	11.5
SGD 408.59	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	28	11.5
SGD 423.18	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	29	11.5
SGD 437.78	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	30	11.5
SGD 452.36	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	31	11.5
SGD 466.96	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	32	11.5
SGD 481.55	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	33	11.5
SGD 496.15	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	34	11.5
SGD 510.73	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	35	11.5
SGD 525.33	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	36	11.5
SGD 539.92	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	37	11.5
SGD 554.52	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	38	11.5
SGD 569.10	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	39	11.5
SGD 583.70	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	40	11.5
SGD 598.29	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	41	11.5
SGD 612.89	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	42	11.5
SGD 627.48	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	43	11.5
SGD 642.06	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	44	11.5
SGD 656.66	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	45	11.5
SGD 671.25	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	46	11.5
SGD 685.85	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	47	11.5
SGD 700.43	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	48	11.5
SGD 715.03	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	49	11.5
SGD 707.76	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	50	11.5
SGD 721.74	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	51	11.5
SGD 735.70	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	52	11.5
SGD 749.68	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	53	11.5
SGD 763.65	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	54	11.5
SGD 777.62	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	55	11.5
SGD 791.60	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	56	11.5
SGD 805.56	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	57	11.5
SGD 819.54	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	58	11.5
SGD 833.51	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	59	11.5
SGD 847.48	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	60	11.5
SGD 861.45	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	61	11.5
SGD 875.42	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	62	11.5
SGD 889.39	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	63	11.5
SGD 903.37	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	64	11.5
SGD 917.33	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	65	11.5
SGD 931.31	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	66	11.5
SGD 945.27	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	67	11.5
SGD 959.25	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	68	11.5
SGD 973.22	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	69	11.5
SGD 987.19	1 Piece(s)		4 Day(s) or more	-	2	4	14	GY (green/yellow) colored	70	11.5

Basic Information

Rated Voltage	300V	Shield	Present	Sheath (outer coating) color	Navy color
Properties	Oil resistance	Representative Standard	UL / CE / CSA(c-UL)	Sheath (outer coating) material	PVC
Insulation body materials	PVC	Power supply/signal	For power supply	Other properties	Noise Resistance

Configure

1,204 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Conductor Cross Section(mm²)
0.5

0.75

1.25

2
Clear
Number Of Cores(Core)
2

3

4

6

8

10

12
Clear
AWG size(AWG)
14

16

18

20
Clear
Grounding Wire
- GY (green/yellow) colored
Clear
Overall Length(m)
1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100
Clear
Finished outer diameter(mm)
7

7.3

7.5

7.9

8.5

9

9.2

9.8

10

10.6

11.5

13.5

14

15.3
Clear

Days to Ship

All

4 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Tech Support

Factory Automation, Electronics, Tools, & MRO (Maintenance, Repair and Operations): Tel：(65) 6733 7211 / FAX：(65) 6733 0211; 9:00am - 6:00pm (Monday - Friday); Technical Inquiry

All Categories

Categories

Search by Application

Brands

Message from MISUMI

My Favorites

Settings

How can we improve?

NA3UCSB UL / CE Supported with Shield (Part Numbers)

Specifications

More Information

Basic Information

Configure

Specification/Dimensions

Conductor Cross Section(mm²)

Number Of Cores(Core)

AWG size(AWG)

Grounding Wire

Overall Length(m)

Finished outer diameter(mm)

Days to Ship

Specify Alterations

Tech Support

Payment Method more

About MISUMI

About this Website

Useful Tools

Customer Service

Social Media

MISUMI Contact 9:00 am – 6:00 pm (Mon – Fri), 9:00 am – 3 pm (Sat)

All Categories

Categories

Search by Application

Brands

Message from MISUMI

My Favorites

Settings

How can we improve?

NA3UCSB UL / CE Supported with Shield (Part Numbers)

Specifications

More Information

Basic Information

Configure

Specification/Dimensions

Conductor Cross Section(mm2)

Number Of Cores(Core)

AWG size(AWG)

Grounding Wire

Overall Length(m)

Finished outer diameter(mm)

Days to Ship

Specify Alterations

Tech Support

Payment Method more

About MISUMI

About this Website

Useful Tools

Customer Service

Social Media

MISUMI Contact 9:00 am – 6:00 pm (Mon – Fri), 9:00 am – 3 pm (Sat)

Conductor Cross Section(mm²)