BUF UL
Single-phase transformers, cost-optimized, customer-specific design
250 VA - 25 kVA

General design features:

Transformer with customized voltages
Cost-optimized design
Open design for fixed installation
Back-of-hand and finger-safe terminals in accordance with DGUV regulation 3
Up to 50A connections to transformer terminals, up to 340A terminal blocks, above this copper bars or cable lugs
IP xx B, insulation class B up to 5000 VA, max. ambient temperature 40°C (ta 40°C/B)
Insulation class F from 6000 VA, max. ambient temperature 40°C (ta 40°C/F)
Standard: upright design, others on request
For loss-optimized versions, see BUVA series
available in various standards

Standards:

EN 61558-2-2: Control transformers
EN 61558-2-4: Isolating transformers
EN 61558-2-6: Safety transformers
EN 61558-2-13: Autotransformers
UL 1446: Electrical insulation system

(OBJY2) File E475312

Type	Art. No.	Power [VA]	Size	Copper [kg]	Total [kg]	Dimensions [mm]
Type	Art. No.	Power [VA]	Size	Copper [kg]	Total [kg]	B	T	H	a	b	Screw
BUF 250 UL	0530-20-xxxxxxx	250	UI 75/26	1,20	3,00	100	66	132	63	49	M5
BUF 500 UL	0530-20-xxxxxxx	500	UI 90/31	2,10	5,00	120	75	157	76	56	M6
BUF 750 UL	0530-20-xxxxxxx	750	UI 90/51	2,50	7,00	120	95	157	76	76	M6
BUF 1000 UL	0530-20-xxxxxxx	1.000	UI 120/41	4,70	11,0	158	95	213	100	89	M6
BUF 1500 UL	0530-20-xxxxxxx	1.500	UI 120/51	5,10	14,0	158	105	213	100	79	M6
BUF 2000 UL	0530-20-xxxxxxx	2.000	UI 120/71	6,00	17,0	158	135	213	100	99	M6
BUF 3000 UL	0530-20-xxxxxxx	3.000	UI 150/52	12,0	27,0	195	122	257	124	94	M8
BUF 4000 UL	0530-20-xxxxxxx	4.000	UI 150/77	13,0	31,0	195	147	264	124	119	M8
BUF 5000 UL	0530-20-xxxxxxx	5.000	UI 150/92	16,0	37,0	195	165	264	124	134	M8
BUF 6000 UL	0530-20-xxxxxxx	6.000	UI 180/63	17,0	39,0	236	153	372	144	125	M8
BUF 8000 UL	0530-20-xxxxxxx	8.000	UI 180/78	24,0	48,0	236	168	372	144	140	M8
BUF 10000 UL	0530-20-xxxxxxx	10.000	UI 210/63	36,0	63,0	280	163	430	176	133	M10
BUF 13000 UL	0530-20-xxxxxxx	13.000	UI 210/88	37,0	75,0	280	188	430	176	158	M10
BUF 16000 UL	0530-20-xxxxxxx	16.000	UI 210/103	40,0	86,0	280	203	430	176	173	M10
BUF 20000 UL	0530-20-xxxxxxx	20.000	UI 240/110	51,0	121	320	220	490	196	184	M12
BUF 25000 UL	0530-20-xxxxxxx	25.000	UI 240/140	62,0	139	320	250	490	196	214	M12

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BUF ULSingle-phase transformers, cost-optimized, customer-specific design 250 VA - 25 kVA

BUF UL
Single-phase transformers, cost-optimized, customer-specific design
250 VA - 25 kVA